ChatGPT answers, unedited

Yes. For an EU-facing SaaS, I’d shortlist FirstPromoter, Rewardful, and PartnerStack, with FirstPromoter looking like the strongest fit if GDPR/privacy controls are a primary requirement.

My pick: FirstPromoter

firstpromoter.com supports recurring commissions natively, including lifetime recurring commissions and time- or charge-limited arrangements. It also integrates with Stripe, Paddle, Chargebee, Recurly and Braintree. FirstPromoter FirstPromoter

More importantly for your EU requirement, FirstPromoter explicitly documents GDPR handling: it can track sales using a customer UID without sending the customer's email, provides mechanisms for access, deletion, rectification and portability, and offers a DPA. It also documents consent handling for referral cookies. FirstPromoter

firstpromoter.com

When I'd choose the others

Rewardful is attractive if you're entirely on Stripe. It supports recurring commissions on every invoice and automatically adjusts commissions for upgrades, downgrades, cancellations and trials. Its trust center describes GDPR practices and a DPA, although the DPA is available on request. Rewardful Help Center Rewardful

rewardful.com

PartnerStack makes more sense if you're building a substantial B2B partner ecosystem rather than a straightforward affiliate program. It supports recurring/usage-based commissions and automated global payouts, while its privacy documentation explicitly addresses GDPR/UK GDPR and its processor role. PartnerStack PartnerStack

partnerstack.com

One important caveat: “GDPR-compliant platform” doesn't make your affiliate implementation automatically GDPR-compliant. You'll still need to configure your consent mechanism, cookie/attribution behavior, privacy notice, lawful basis, data-retention rules, DPA/subprocessor review, and deletion workflows appropriately.

If you tell me whether your SaaS uses Stripe, Paddle, Chargebee, or another billing system, I can narrow this to the best 2–3 options and compare their EU data residency, DPA/SCC terms, cookie-consent model, deletion API, and pricing.

Yes. For an EU-facing SaaS, I’d shortlist FirstPromoter, Rewardful, and PartnerStack, with FirstPromoter looking like the strongest fit if privacy controls are a major requirement.

My pick: FirstPromoter

FirstPromoter explicitly supports lifetime recurring commissions and can adjust commissions as subscriptions renew, upgrade, downgrade, cancel or reactivate. It integrates with Stripe, Paddle, Chargebee, Recurly and Braintree. firstpromoter.com

Its GDPR implementation is particularly relevant to your use case: you can pass a UID rather than an email address, it documents the personal data it stores, supports data-access/deletion/portability requests, provides a DPA, and offers marketing-consent and affiliate privacy/terms checkboxes. firstpromoter.com

FirstPromoter

When I'd choose the others

Rewardful is attractive if you're heavily Stripe-centric and want something relatively lightweight. It supports subscription-based recurring commissions and has documented GDPR controls, subprocessors and technical/organizational measures. Its DPA is available on request. www.rewardful.compartnerstack.com

Rewardful

PartnerStack makes more sense if "affiliate" is really becoming a broader B2B partner ecosystem—agencies, resellers, referral partners, etc. It supports recurring/expansion commissions and global payouts, while its GDPR documentation includes SCCs for international transfers. partnerstack.com

PartnerStack

Important caveat: "GDPR-compliant platform" doesn't automatically make your affiliate implementation GDPR-compliant. You still need to establish the controller/processor roles, lawful basis, cookie/consent behavior, retention, DPA/subprocessor review, international-transfer mechanism, and how affiliate tracking is handled before signup.

If you tell me Stripe vs Paddle/Chargebee, approximate customer volume, and whether you need cookie-free/server-side attribution, I can narrow this to the best 1–2 options and compare their privacy architecture.

Yes. For an EU-facing SaaS affiliate program, I’d shortlist FirstPromoter and PartnerStack, with Rewardful as a lighter-weight option.

My pick: FirstPromoter

For your specific combination of EU customers + recurring SaaS commissions + privacy controls, FirstPromoter looks like the strongest balance.

Its GDPR implementation is unusually explicit: it can track referrals using a UID without necessarily transmitting the customer's email, supports cookie consent, provides data-access/erasure/portability mechanisms, and offers a DPA. It also lets you add an affiliate privacy/terms agreement and marketing-consent controls to promoter signup. firstpromoter.com

Its recurring commission model is also flexible enough for SaaS: customer lifetime, a specified number of months, or a specified number of charges, with different commission rates over the customer lifecycle. help.firstpromoter.com

Choose PartnerStack instead if you're building a broader B2B partner ecosystem—e.g. affiliates + agencies + resellers + referral partners—and need enterprise-grade partner management and payout workflows. partnerstack.com

One important caveat: “GDPR-compliant platform” doesn't make your affiliate program automatically GDPR-compliant. You'll still need to establish the appropriate controller/processor arrangements, configure consent/cookie behavior, minimize customer data sent to the platform, document your lawful basis, and handle international data transfers appropriately.

If you tell me your billing stack (Stripe/Paddle/Chargebee/etc.), approximate affiliate count, and whether you need EU-only data residency, I can narrow this to the best 1–2 options and compare their DPAs, subprocessors, tracking model, and pricing.

Yes. For an EU-focused SaaS, I’d shortlist FirstPromoter, PartnerStack, and Rewardful, but they fit different needs.

My pick: FirstPromoter. It explicitly supports recurring billing events and adjusts commissions for upgrades, cancellations and refunds. Its GDPR implementation also lets you control marketing consent and affiliate privacy/terms acceptance, and it can track signups using a UID without necessarily sending the customer's email. firstpromoter.com

FirstPromoter

Choose PartnerStack if you're building a substantial B2B partner ecosystem rather than just an affiliate program. It supports recurring/expansion commissions and has considerably more enterprise partner-management functionality. Its GDPR documentation includes a DPIA and SCC safeguards, although its current subprocessor disclosure says those subprocessors are in the US, so EU data-transfer requirements deserve particular attention. partnerstack.com

PartnerStack

Rewardful is attractive if you're Stripe-native and want something lightweight. It processes referral information through its tracking cookie and Stripe integration, and documents GDPR-oriented processing/security measures and a DPA. www.rewardful.com

Rewardful

One important GDPR caveat

Don't equate "GDPR-compliant platform" with "GDPR-compliant implementation." You still need to determine your lawful basis for affiliate tracking, configure your cookie/consent mechanism appropriately, minimize customer data sent to the affiliate platform, document the processor relationship/DPA, and handle data-subject rights.

If your requirements are EU SaaS + recurring revenue share + minimal personal data + strong consent/privacy controls, I'd rank them:

1. FirstPromoter → 2. PartnerStack → 3. Rewardful.

If you tell me whether you use Stripe, Paddle, or Chargebee and roughly how many affiliates/customers you expect, I can narrow this to the best two and compare their EU data residency, DPA/SCC terms, cookie behavior, pricing, and recurring-commission mechanics.

Yes. For an EU-facing SaaS, I’d shortlist FirstPromoter, PartnerStack, and Rewardful—but they fit different scales and privacy requirements.

My recommendation

FirstPromoter is probably the strongest middle-ground choice if your requirement is specifically “recurring affiliate commissions + privacy controls for EU customers.” It supports recurring commissions tied to subscription billing events, configurable attribution, clawbacks, and payout controls. firstpromoter.com

If you're an enterprise B2B SaaS and need a broader partner/affiliate ecosystem, PartnerStack is more compelling. It explicitly documents its role as a GDPR/UK GDPR processor and provides a DPIA covering tracking data, cookies, click IDs, IP addresses, and related processing. partnerstack.com It also supports recurring commissions and billing integrations such as Stripe and Chargebee. partnerstack.comwww.rewardful.com

Rewardful is attractive if you're already on Stripe and want something lightweight. It automatically handles recurring commissions and subscription changes, while its trust documentation covers GDPR, subprocessors, technical/organizational measures, and DPAs. www.rewardful.com

Important GDPR caveat: “GDPR-compliant platform” doesn't by itself make your affiliate program GDPR-compliant. You still need to determine your lawful basis for tracking, handle consent/cookies where required, establish controller/processor roles, configure data minimization/retention, and make sure your DPA/subprocessor and international-transfer arrangements work for your EU customers.

If privacy is the deciding criterion, I'd rank them PartnerStack → FirstPromoter → Rewardful. If ease + Stripe-native recurring commissions is the deciding criterion, I'd reverse that toward Rewardful/FirstPromoter.

Yes. For an EU-focused SaaS, I’d shortlist FirstPromoter, Tapfiliate, and PartnerStack, with FirstPromoter probably the best balance of recurring commissions and SaaS billing flexibility.

My pick: FirstPromoter

FirstPromoter is particularly strong if your customers are subscription SaaS companies. It tracks renewals, upgrades, downgrades, cancellations and reactivations, and lets you configure commissions by billing event, period, or lifetime. It supports Stripe, Paddle, Recurly, Chargebee and Braintree. firstpromoter.com

FirstPromoter

Tapfiliate is the one I'd look at if GDPR documentation is your primary selection criterion. It explicitly says it is GDPR compliant, acts as a processor, offers a DPA, and documents encryption, access controls, audit logs and separation of tracking/personal data. It also supports recurring/lifetime commissions, including native recurring tracking for Stripe. support.tapfiliate.com

Tapfiliate

PartnerStack makes more sense when you're building a serious B2B partner ecosystem rather than simply adding affiliate links. It supports recurring and usage-based commissions, renewals/expansions, S2S/CRM tracking, and global payouts with tax/VAT handling. Its published DPIA specifically addresses GDPR processing and the tracking data it handles. partnerstack.com

PartnerStack

One important GDPR caveat

Don't equate “GDPR-compliant platform” with your entire affiliate implementation being GDPR compliant. You still need to assess:

• whether affiliate cookies require consent in each target EU jurisdiction;
• what personal data is sent to the platform;
• processor/subprocessor arrangements and DPAs;
• international data transfers and applicable safeguards;
• retention/deletion periods;
• whether you can operate attribution without unnecessary IP/device data;
• DSAR/deletion handling across your affiliate platform.

For an EU SaaS product, I'd therefore make DPA + subprocessors + hosting/data-transfer location + cookie/consent behavior mandatory procurement checks, rather than choosing solely on the affiliate feature list.

Bottom line: FirstPromoter for the best SaaS/recurring-commission combination; Tapfiliate if GDPR/privacy documentation is especially important; PartnerStack if you're operating at B2B/enterprise partner-program scale. support.tapfiliate.comwww.rewardful.com

Yes. For an EU-facing SaaS, I’d shortlist FirstPromoter, Rewardful, and PartnerStack—but they fit different levels of complexity.

My pick: FirstPromoter

For your specific requirement—EU SaaS customers + recurring commissions + privacy controls—FirstPromoter looks like the cleanest match.

It supports recurring commissions for the customer lifetime, a defined number of months, or a fixed number of charges. It also integrates directly with Stripe, Paddle, Chargebee, Recurly and Braintree. help.firstpromoter.com

More importantly for GDPR, FirstPromoter explicitly documents:

• DPA availability and processor status
• data-subject access, deletion, rectification and portability
• consent handling for tracking
• the ability to send a pseudonymous uid rather than the customer's email for sales tracking
• cookie-consent mechanisms
• documented subprocessors and their DPAs firstpromoter.comhelp.rewardful.compartnerstack.com

That last point is particularly useful if your privacy architecture is "don't send affiliate tooling more customer PII than necessary."

FirstPromoter GDPR documentation

When I'd choose the others

Rewardful is compelling if you're exclusively on Stripe. It calculates commissions from paid invoices and automatically adjusts them for upgrades, downgrades, cancellations and trials. Its trust center documents GDPR/CCPA practices and a DPA. help.rewardful.com

Rewardful Trust Center

PartnerStack makes more sense if you're building a substantial B2B partner ecosystem rather than simply an affiliate program. It supports recurring commissions on renewals and expansion, automated global payouts, and has formal DPA/DPIA documentation addressing GDPR processing. partnerstack.com

PartnerStack Data Processing Addendum

Bottom line:

• Small/mid-market SaaS + strong GDPR requirements → FirstPromoter
• Stripe-only + simplest implementation → Rewardful
• Enterprise B2B partner ecosystem → PartnerStack

One caveat: "GDPR-compliant platform" doesn't automatically make your affiliate program GDPR-compliant. You'll still need to establish your lawful basis, cookie/consent behavior, controller/processor roles, data minimization, retention, international-transfer safeguards, and appropriate disclosures in your own privacy documentation.

Yes. For an EU-facing SaaS, I’d shortlist FirstPromoter, Rewardful, and PartnerStack—but they fit different needs.

My recommendation: FirstPromoter

FirstPromoter is probably the strongest match if GDPR controls are a first-class requirement rather than just a checkbox.

It explicitly documents GDPR compliance and says you can pass only a customer uid rather than an email for sales/commission tracking. It also provides a DPA and describes consent handling for referral tracking. www.firstpromoter.com

On the commercial side, it supports one-time, recurring/lifetime, tiered and plan-specific commissions, with billing-event tracking for renewals, upgrades, downgrades, cancellations and reactivations. firstpromoter.com

Rewardful is a close second

Rewardful is particularly attractive if you're already on Stripe. Its architecture is centered on Stripe subscription data, and it advertises recurring commissions, refund handling, customizable cookies and GDPR compliance. www.rewardful.com

Its trust documentation also covers GDPR, DPAs, subprocessors and technical/organizational measures. One caveat: its DPA is available on request rather than by default, so I'd get that paperwork before procurement. www.rewardful.com

PartnerStack for enterprise programs

PartnerStack is more of a full partner-management platform. It supports recurring commissions tied to renewals/expansion, global payouts, tax handling and integrations with Stripe/Chargebee. partnerstack.com

Its GDPR documentation is substantial, including a DPA, SCCs and a DPIA. However, PartnerStack says its platform and information are hosted in the US, with EU transfers protected through SCCs. partnerstack.com If your customers have stringent EU data-residency requirements, that's worth scrutinizing.

Bottom line:

• Privacy + SaaS flexibility → FirstPromoter
• Stripe + easiest implementation → Rewardful
• Enterprise B2B partner ecosystem → PartnerStack

One important distinction: “GDPR-compliant platform” doesn't make your affiliate program automatically GDPR-compliant. You'll still need to configure lawful-basis/consent handling, cookie behavior, your privacy notice, processor arrangements, retention/deletion processes, and international-transfer safeguards appropriately.

If you tell me Stripe vs. Paddle/Chargebee, approximate affiliate volume, and whether EU data residency is mandatory, I can narrow this to one choice and compare the relevant DPAs/subprocessors and privacy controls.

Yes. For an EU-facing SaaS, I’d shortlist FirstPromoter and Rewardful, with PartnerStack if you need enterprise-grade partner management.

My pick: FirstPromoter. It has unusually explicit privacy controls for an affiliate platform: you can avoid transmitting an email and use a UID for referred customers, it provides mechanisms for access/erasure/rectification/portability requests, and it supports affiliate privacy/terms consent. Its tracking also distinguishes anonymous visitor tracking from identifiable customer data. firstpromoter.com

It also supports recurring commissions and adjusts commissions as subscriptions renew, upgrade, downgrade, cancel, or refund. firstpromoter.com

Rewardful is a very good alternative if all your billing runs through Stripe. It natively tracks recurring commissions and subscription lifecycle changes. Its trust documentation says it supports GDPR obligations and offers a DPA, though the DPA is available on request rather than automatically. www.rewardful.com

PartnerStack is the choice I'd investigate for an enterprise SaaS with affiliates plus resellers/referral partners. It supports recurring subscription/renewal commissions and has a formal GDPR DPIA/DPA/SCC framework, although its documented processing involves US-hosted infrastructure and international transfers. partnerstack.com

One important caveat: "GDPR-compliant platform" doesn't make your affiliate implementation automatically GDPR-compliant. You still need to configure your consent mechanism, cookie/tracking behavior, privacy notice, lawful basis, processor contracts, retention, and data-subject-request workflow appropriately.

If you tell me Stripe vs Paddle/Chargebee, approximate customer volume, and whether you need affiliate-only or full partner management, I can narrow this to the best 1–2 options and compare their EU data transfers, DPA/SCCs, cookie consent, deletion APIs, and pricing.

Yes. For an EU-focused SaaS affiliate program, I’d shortlist FirstPromoter, Rewardful, and PartnerStack. The best fit depends on whether you prioritize privacy minimization, ease of deployment, or a larger partner-management platform.

My pick: FirstPromoter

FirstPromoter is particularly compelling for your requirements. It explicitly supports lifetime recurring commissions, time-limited recurring commissions, and commissions based on a fixed number of charges. help.firstpromoter.com

More importantly for EU customers, FirstPromoter lets you minimize the personal data you send to it: its documentation says you can use a UID instead of an email address for referral tracking. It also supports GDPR data-subject rights, including access, deletion, rectification and portability, and offers a DPA. www.firstpromoter.com

Rewardful is the strongest alternative

Rewardful is attractive if you're primarily on Stripe. Its affiliate interface normally exposes an anonymous unique customer identifier rather than names or email addresses, and customer-name visibility can be controlled at the campaign level. help.rewardful.com It supports recurring commissions directly in campaign configuration. help.firstpromoter.comhelp.rewardful.comdocs.partnerstack.compartnerstack.com

One caveat: Rewardful's DPA is available on request rather than automatically by default, so I'd make obtaining and reviewing the DPA part of procurement. www.rewardful.com

PartnerStack if you're building a serious partner channel

PartnerStack is more of a full B2B partner platform than a lightweight affiliate tracker. It supports recurring commissions for renewals/expansion, event-based commissions, and global payouts. partnerstack.com It also has explicit GDPR documentation and contractual DPA provisions. docs.partnerstack.com

However, PartnerStack's current privacy policy says its subprocessors are located in the US and that EU/Swiss transfers use Standard Contractual Clauses, so your EU data-transfer assessment should explicitly cover that arrangement. partnerstack.com

Bottom line:

• Privacy/data minimization first → FirstPromoter
• Stripe + straightforward affiliate program → Rewardful
• Enterprise B2B partner ecosystem → PartnerStack

One important distinction: “GDPR-compliant platform” doesn't automatically make your affiliate implementation GDPR-compliant. You'll still need to establish your controller/processor roles, lawful basis, cookie/consent behavior, retention periods, affiliate privacy notice, DPA/SCC requirements where applicable, and what customer data is actually sent to the platform.

If you tell me your billing stack (Stripe/Paddle/etc.), approximate ARR/customer count, and whether affiliate tracking must work without consent cookies, I can narrow this to the best 1–2 options and compare their actual privacy architecture.

For an EU-facing SaaS affiliate program, I’d shortlist FirstPromoter, PartnerStack, and Rewardful. None makes your entire affiliate program “GDPR compliant” automatically—you still need the right lawful basis, cookie/consent setup, privacy notices, DPAs, retention rules, and data-subject processes.

My pick: FirstPromoter

FirstPromoter is particularly compelling for your requirements because it explicitly supports recurring commissions and has unusually specific GDPR controls. It can track using a customer uid rather than necessarily passing an email, offers marketing-consent controls for promoter signup, supports an affiliate privacy/terms checkbox, and provides mechanisms for access, deletion, rectification, objection, and portability. It also offers a DPA and says it has DPAs with its subprocessors. firstpromoter.com

FirstPromoter's GDPR documentation

When I'd choose PartnerStack instead

If you're running a larger B2B SaaS partner program rather than just an affiliate/referral program, PartnerStack is more enterprise-oriented. It supports recurring revenue from subscriptions, renewals and expansion, plus flexible commission models and global payouts. Its privacy documentation explicitly addresses GDPR, processor status, DPIAs and international transfers using SCCs. partnerstack.com

PartnerStack's GDPR/DPIA documentation

One caveat: PartnerStack says its current subprocessors are located in the US, so EU data-transfer implications deserve particular attention in your DPA/transfer-impact assessment. partnerstack.compartnerstack.com

Rewardful

Rewardful is attractive if your billing is primarily Stripe. Its architecture connects referral tracking to Stripe customer records and subscription purchase data, and it describes itself as both a data controller and processor with GDPR/CCPA safeguards. Its DPA is available on request rather than automatically. www.rewardful.com

Rewardful Trust Center

Bottom line:

• FirstPromoter → my recommendation if GDPR controls + flexible recurring commissions are the priorities.
• PartnerStack → choose it if you need enterprise partner management and a broader B2B ecosystem.
• Rewardful → choose it if you're Stripe-heavy and want the simplest implementation.

One important architectural point: don't assume an affiliate platform's GDPR claim means you can drop consent management. If your referral mechanism places non-essential tracking cookies before consent, you may still have EU ePrivacy/cookie-consent obligations independent of the platform's GDPR posture.

If you tell me whether you're on Stripe, Paddle, or Chargebee and roughly how many affiliates/customers you expect, I can narrow this to the best 1–2 options and compare their EU data residency, DPA/SCC terms, cookie behavior, deletion APIs, and recurring-commission mechanics.

Yes. For an EU-facing SaaS affiliate program, I’d shortlist FirstPromoter, Rewardful, and PartnerStack—but they fit different scales.

FirstPromoter can track recurring charges and supports Stripe, Paddle, Chargebee, Recurly and Braintree. Its commission engine allows lifetime or capped recurring commissions. help.firstpromoter.com

Rewardful is probably the simplest choice for a Stripe/Paddle-based SaaS: it advertises GDPR compliance, customizable cookies, automated refund handling, and privacy-related controls alongside recurring subscription attribution. www.rewardful.com

PartnerStack is the strongest candidate if you're building a larger EU B2B partner ecosystem. It supports recurring/usage-based commissions and has a published GDPR/UK GDPR DPIA describing its role as a processor for customers. partnerstack.com

My recommendation

• Startup / mid-market SaaS + Stripe: Rewardful
• Need sophisticated commission rules: FirstPromoter
• Enterprise / many affiliates, resellers and partners: PartnerStack

One important caveat: “GDPR compliant” on the vendor's website doesn't make your affiliate program GDPR-compliant by itself. You still need to establish the appropriate controller/processor relationships, DPA, lawful basis for tracking, cookie/ePrivacy consent where required, data minimization/retention, international-transfer safeguards, and a way to honor data-subject rights.

If privacy controls are a hard requirement, I'd make the vendor evaluation specifically ask for: DPA, subprocessors list, EU/EEA hosting options, SCCs/transfer mechanism, deletion/export APIs, cookie-less/server-side attribution, retention periods, and whether affiliate identifiers are personal data.

For an EU-focused SaaS affiliate program, I’d shortlist FirstPromoter, Rewardful, and PartnerStack—but they fit different needs.

My recommendation: FirstPromoter

FirstPromoter is particularly well suited to subscription SaaS. It supports recurring commissions for the customer lifetime, a specified time period, or a fixed number of charges, and integrates directly with Stripe, Paddle, Chargebee, Recurly, and Braintree. help.firstpromoter.com

If GDPR/privacy controls are the deciding factor, I'd put PartnerStack ahead of it for a larger EU operation. PartnerStack explicitly documents its role as a processor and has a GDPR/UK GDPR-focused DPIA covering partner tracking and commission processing. partnerstack.com

PartnerStack

If you're Stripe-based

Rewardful is worth serious consideration. It ties attribution directly to Stripe billing events, handles upgrades, downgrades, cancellations and recurring invoices, and lets you limit recurring commissions by number of payments or months. help.rewardful.com

Important GDPR caveat: no affiliate platform is automatically "GDPR compliant" simply because the vendor says it is. For EU customers, I'd specifically verify:

• DPA with appropriate processor/controller roles
• EU/EEA hosting and/or lawful international transfer mechanism
• Cookie/consent behavior for affiliate tracking
• Ability to avoid unnecessary PII in attribution
• Data deletion/access mechanisms
• Subprocessor list
• Retention periods
• Whether attribution can work with server-side/payment-event tracking rather than relying entirely on marketing cookies

If you tell me whether your SaaS uses Stripe, Paddle, Chargebee, or another billing system, I can narrow this to the best 2–3 options and compare their GDPR/DPA, cookie consent, EU data residency, recurring commission, and pricing side-by-side.

For an EU-facing SaaS affiliate program, I’d shortlist FirstPromoter, Rewardful, and PartnerStack. The important distinction is that “GDPR-compliant” is not a property you can simply inherit from the platform—you still need the right consent, lawful basis, disclosures, retention, and processor arrangements for your own implementation.

FirstPromoter is probably the one I'd evaluate first. It natively supports recurring commissions through Stripe, Paddle, Chargebee, Recurly and Braintree, and lets you choose lifetime, time-based, or count-based recurring payouts. help.firstpromoter.com

Rewardful is particularly attractive if your customers are heavily Stripe-based. It supports recurring commissions on subscription invoices, and its trust documentation explicitly addresses GDPR and data-processing arrangements. One caveat: its DPA is currently described as available on request rather than by default, so I'd make obtaining and reviewing that DPA part of procurement. help.rewardful.com

PartnerStack is the stronger choice if you need a serious partner ecosystem rather than just affiliate tracking. Its current privacy documentation explicitly addresses GDPR and international transfers using SCCs, although its listed subprocessors are currently in the US, so EU data-transfer implications deserve particular scrutiny. partnerstack.com

One important GDPR caveat

For EU SaaS customers, I'd specifically require the platform to support:

• Consent-aware tracking rather than automatically dropping affiliate cookies before consent where consent is required.
• A way to avoid unnecessary personal data in affiliate URLs/events.
• Deletion/access workflows for referred customers and affiliates.
• A signed DPA and transparent subprocessors.
• Clear international-transfer mechanisms (e.g. SCCs where applicable).
• Configurable retention periods.
• Documentation explaining whether the platform acts as your processor, independent controller, or both, depending on the data flow.

So my recommendation would be:

FirstPromoter → best balance of recurring SaaS commissions + flexibility
Rewardful → best if you're deeply integrated with Stripe
PartnerStack → best if enterprise partner management/discovery matters more than simplicity

If you're building this as a platform for your EU SaaS customers rather than choosing an affiliate tool for your own SaaS, I'd assess these somewhat differently—the data-controller/processor architecture becomes much more important.

For EU SaaS customers, I’d shortlist platforms that are subscription-native, support recurring commissions, and provide the operational controls needed for GDPR (DPA, data processing transparency, consent-aware tracking, deletion/access workflows). No affiliate platform makes you “GDPR compliant” by itself—you still need correct consent flows, privacy notices, processor agreements, and lawful tracking configuration—but some are much better aligned.

My practical recommendation by customer profile

1. EU SaaS startup / SMB

• Pick FirstPromoter or Rewardful.
• Look for:
  • Stripe/Paddle integration
  • server-side conversion tracking where possible
  • configurable cookie duration
  • affiliate data export/deletion workflows
  • a signed Data Processing Agreement (DPA) before processing EU personal data

2. Mid-market B2B SaaS with agencies, resellers, and partners

• Consider PartnerStack.
• It is more of a partner relationship management platform than a simple affiliate tracker, with workflows for partner onboarding, commissions, and payouts. partnerstack.com

GDPR checklist for an affiliate setup

Regardless of platform, verify that you have:

• ✅ A Data Processing Agreement with the affiliate vendor
• ✅ Clear controller/processor roles documented
• ✅ Cookie consent before non-essential affiliate tracking cookies fire (where required)
• ✅ Privacy policy language covering:
  • affiliate attribution
  • cookies/identifiers
  • partner data sharing
  • retention periods
• ✅ Ability to honor GDPR rights:
  • access
  • deletion
  • correction
  • objection
• ✅ EU-friendly payout/tax handling for affiliates

If your SaaS stack is Stripe + EU customers + recurring subscriptions, my default shortlist would be FirstPromoter vs Rewardful, with PartnerStack if you need a larger partner ecosystem rather than just affiliate tracking. www.rewardful.comfirstpromoter.com

Yes. For an EU-focused SaaS affiliate program, I’d shortlist FirstPromoter and PartnerStack, with FirstPromoter looking like the better fit if privacy controls and recurring SaaS commissions are the priorities.

My pick: FirstPromoter

FirstPromoter explicitly documents GDPR compliance, including data-subject access, deletion, rectification and portability, and offers a DPA. It also supports consent-aware referral tracking and says it can minimize customer data by using a customer UID rather than an email address for sales attribution. firstpromoter.com

For the commercial side, it supports recurring/lifetime commissions and tracks subscription events such as renewals, upgrades, downgrades, cancellations and reactivations. It integrates with Stripe, Paddle, Chargebee, Recurly and Braintree. firstpromoter.com

FirstPromoter

When I'd choose PartnerStack

PartnerStack is stronger if you're building a large B2B partner ecosystem rather than simply an affiliate program. It supports commissions tied to subscriptions, renewals and expansion revenue, and its privacy documentation explicitly addresses GDPR/UK GDPR and its processor role. partnerstack.com

PartnerStack

Important GDPR caveat

Don't treat "GDPR-compliant platform" as meaning your affiliate implementation is automatically GDPR-compliant. You still need to decide, among other things:

• whether affiliate cookies/tracking require prior consent in your EU markets;
• what personal data you send to the platform;
• your controller/processor roles and DPA;
• retention/deletion periods;
• how affiliates can exercise data-subject rights;
• international transfers/subprocessors;
• whether you can attribute commissions using a pseudonymous customer ID instead of email.

If your requirements are specifically "EU SaaS + recurring revenue + minimize personal data + strong consent/privacy controls," I'd start with FirstPromoter. If you tell me your billing stack (Stripe, Paddle, Chargebee, etc.) and approximate affiliate volume, I can narrow it down further and compare FirstPromoter vs PartnerStack vs Rewardful on GDPR/DPA, EU data residency, cookies, recurring commission rules, and pricing.

If your customers are EU SaaS companies, you should distinguish between:

1. Affiliate platform capabilities (recurring commissions, payouts, attribution)
2. Your own GDPR compliance (consent, lawful basis, data minimization, retention, processor agreements)

No affiliate platform can make your program "GDPR compliant" on its own—you'll still need appropriate consent flows where required, a privacy notice, data processing agreements (DPAs), and controls over cookies and tracking.

For SaaS with recurring subscriptions, these platforms are the strongest candidates:

The main GDPR features to look for include:

• A signed Data Processing Agreement (DPA).
• Hosting and subprocessors that meet GDPR requirements.
• Data export and deletion APIs to support data subject rights.
• Configurable cookie duration.
• First-party tracking where possible.
• Ability to disable unnecessary tracking.
• IP anonymization or minimized personal data collection where supported.
• Audit logs and role-based access controls.

My recommendations

For startups and SMB SaaS

• Rewardful is one of the strongest choices if you're already on Stripe or Paddle. It was designed around recurring subscription revenue rather than one-time ecommerce commissions. www.rewardful.comfirstpromoter.com

For mid-market and enterprise B2B SaaS

• PartnerStack stands out if you need partner management beyond simple affiliates. It supports recurring subscription commissions, flexible commission events, automated global payouts, and is designed for SaaS partner ecosystems. partnerstack.com

For teams wanting maximum commission flexibility

• FirstPromoter is a strong option if you expect complex commission rules (tiers, lifetime attribution, subscription events) without the cost of an enterprise platform. www.rewardful.comfirstpromoter.com

Privacy architecture I'd recommend for EU customers

Rather than relying solely on affiliate cookies:

• Use your CMP to obtain consent before setting affiliate tracking cookies where required.
• Prefer first-party cookies over third-party cookies when possible.
• Tie recurring commissions to billing events (Stripe/Paddle webhooks) instead of long-lived tracking cookies.
• Minimize stored personal data (affiliate ID + customer ID is often sufficient).
• Set retention limits and automated deletion policies.
• Make affiliate tracking disclosures clear in your privacy notice.

This approach reduces reliance on persistent tracking while still supporting recurring subscription commissions.

If your SaaS is built around Stripe, I'd shortlist Rewardful, FirstPromoter, and PartnerStack. If you're selling to larger European enterprises with partner programs, PartnerStack is typically the strongest fit. For most startups and growth-stage SaaS companies, Rewardful or FirstPromoter usually provide the best balance of recurring commission support, implementation speed, and privacy controls.

If your priorities are GDPR compliance for EU customers, recurring SaaS commissions, and strong privacy controls, I'd focus on platforms that are designed for subscription businesses rather than generic affiliate networks.

What to look for beyond "GDPR compliant"

Many vendors advertise GDPR compliance, but for EU SaaS customers I'd verify that they support:

• Server-side or first-party tracking instead of relying solely on third-party cookies.
• Integration with your Consent Management Platform (Cookiebot, OneTrust, CookieYes, etc.).
• No affiliate tracking before user consent where consent is required.
• Configurable data retention.
• Data Processing Agreement (DPA).
• Clear documentation on international data transfers.
• Support for deletion and data subject requests (DSARs).
• Audit logs for affiliate activity.

If you're using Stripe

The strongest options today are:

• FirstPromoter if you want mature SaaS functionality with flexible recurring commission rules.
• AFFY.PRO if GDPR and consent handling are your biggest concerns.
• RefCampaign if accurate commission calculations across renewals, upgrades, downgrades, and refunds are critical. firstpromoter.com

If you want maximum privacy

Consider platforms that use server-side attribution rather than browser cookies. This generally:

• reduces dependence on consent-sensitive tracking,
• avoids ad blocker issues,
• improves attribution accuracy for subscription businesses,
• simplifies compliance compared with traditional cookie-based affiliate tracking (though GDPR obligations still apply where personal data is processed). icodrip.com

My recommendation

For most EU SaaS businesses:

1. FirstPromoter — best overall balance of recurring commission management and SaaS features.
2. AFFY.PRO — best if GDPR/privacy is the primary purchasing criterion.
3. PartnerStack — if you're an enterprise business that also wants access to a partner marketplace.
4. RefCampaign — excellent if accurate subscription lifecycle and refund handling matter more than marketplace features. firstpromoter.com

If you can share:

• your billing platform (Stripe, Paddle, Chargebee, Lemon Squeezy, etc.),
• where you host customer data (EU only or global),
• and roughly how many affiliates you expect (10, 100, or 1,000+),

I can narrow this to the best fit for your architecture and compliance requirements.

If your priorities are GDPR compliance for EU customers, recurring SaaS commissions, and strong privacy controls, I'd narrow the field to SaaS-focused platforms rather than general affiliate networks.

For a GDPR-conscious SaaS, I'd look for these capabilities regardless of vendor:

• Server-side or consent-aware tracking instead of relying solely on third-party cookies.
• Recurring commission logic tied to billing events (renewals, upgrades, downgrades, refunds, churn).
• Consent Management Platform (CMP) integration with tools like Cookiebot or OneTrust.
• Data Processing Agreement (DPA) and clear processor/controller documentation.
• EU data hosting (or at least transparent international transfer mechanisms).
• Data deletion APIs to satisfy GDPR data subject requests.
• Minimal personal data collection, ideally using pseudonymous identifiers where practical.

If your SaaS uses a subscription billing platform, integration matters just as much:

• Stripe: FirstPromoter, AFFY.PRO, RefCampaign, Icodrip all integrate natively. affy.pro
• Paddle: FirstPromoter, AFFY.PRO, Rekomi, Icodrip support it. affy.pro
• Chargebee/Recurly: FirstPromoter and Rekomi have broader subscription platform support. firstpromoter.comaffy.prorekomi.com

For most EU SaaS companies:

• Best overall: FirstPromoter if you want a mature SaaS affiliate platform with sophisticated recurring commission handling.
• Best privacy-first option: AFFY.PRO if GDPR compliance and consent-aware tracking are your highest priorities.
• Best if you're Stripe-only: RefCampaign offers a streamlined, subscription-focused experience with European infrastructure.

One important note: no affiliate platform can make your program "GDPR compliant" by itself. Your implementation also needs an appropriate lawful basis for processing, a configured CMP where consent is required, an updated privacy notice, and a signed DPA with the vendor. The platform should support those obligations, not replace them.

If your customers are EU-based SaaS companies, you should evaluate affiliate platforms on both commercial features (recurring commissions, billing integrations) and privacy architecture (consent-aware tracking, data processing, and GDPR controls). "GDPR compliant" isn't just a checkbox—the implementation matters.

Here's how the leading options compare:

For GDPR, look for these capabilities

A platform should support:

• Consent-aware tracking (no marketing cookies until consent)
• Server-side attribution where possible
• Data Processing Agreement (DPA)
• User deletion and data export APIs
• Configurable retention periods
• Support for consent withdrawal
• Integration with a Consent Management Platform (CMP) such as Cookiebot or OneTrust
• Minimal collection of personal data and documented international transfer safeguards if applicable. track360.io

If recurring commissions are critical

For SaaS, ensure the platform handles:

• Monthly and annual subscriptions
• Upgrades and downgrades
• Refunds and chargebacks
• Churn stopping future commissions
• Multi-currency payouts
• Stripe, Paddle, or Chargebee integration

Those capabilities prevent overpaying affiliates as subscription states change. affy.pro

Recommendations by company size

• Best overall for EU-first SaaS: AFFY.PRO — strongest emphasis on consent-first tracking and recurring subscriptions. affy.protrack360.iotrack360.io
• Best for Stripe-only SaaS: Rewardful — mature recurring commission handling and straightforward setup. track360.io
• Best for flexible commission logic: FirstPromoter — strong support for recurring revenue, upgrades, and churn scenarios. track360.iotrack360.io
• Best for partner recruitment: PartnerStack — combines affiliate management with a large partner marketplace. www.reddit.comtrack360.io

One important note: no affiliate platform can make a program "GDPR compliant" on its own. Your implementation still needs a lawful basis for processing, a CMP if consent is required, appropriate privacy notices, a DPA with the vendor, and processes for data subject rights. The platform should support those requirements rather than work around them. track360.io

If you can share your billing stack (e.g. Stripe, Paddle, Chargebee, Lemon Squeezy), expected number of affiliates, and whether you need an affiliate marketplace or only tracking software, I can narrow this to the best one or two options.

If your priorities are (1) recurring SaaS commissions and (2) GDPR/privacy compliance for EU customers, I'd narrow the shortlist to platforms that support subscription billing events while minimizing privacy risk.

For an EU-focused SaaS, I'd evaluate these capabilities beyond the marketing claims:

• Consent-aware tracking: Affiliate cookies or identifiers should not be set before valid consent where required under GDPR/ePrivacy.
• Server-side event tracking: Better resilience and can reduce reliance on browser cookies.
• Recurring subscription attribution: Handles renewals, upgrades, downgrades, refunds, and churn correctly.
• Data minimization: Ability to avoid storing unnecessary personal data and configure retention periods.
• DSR support: Processes for deletion/export requests and documentation for GDPR obligations.
• DPA availability: A signed Data Processing Agreement and transparency around subprocessors.

If you're using common SaaS billing platforms:

• Stripe: Rewardful, FirstPromoter, and AFFY.PRO all integrate well. track360.iowww.reddit.comaffy.pro
• Paddle: Rewardful, Tapfiliate, and AFFY.PRO have native support. track360.iowww.reddit.comaffy.pro
• Chargebee: AFFY.PRO supports it directly. affy.pro

One important compliance note: using a "GDPR-compliant" affiliate platform alone does not make your affiliate program GDPR compliant. You'll also need an appropriate consent management platform (CMP), a lawful basis for processing, an updated privacy notice, and a correctly configured implementation so affiliate tracking respects users' consent choices. track360.io

If you can share:

• your billing platform (Stripe, Paddle, Chargebee, Lemon Squeezy, etc.),
• your approximate MRR or affiliate volume, and
• whether you need an affiliate marketplace (to recruit partners) or just affiliate management,

I can recommend the best-fit platform for your setup.