# What pairs well with UpPromote > UpPromote is a referrals tool, and a team running it still has 6 neighbouring categories to staff. The pick in each is Paddle for subscription billing, Mailchimp for email service providers, Unbounce for landing page builders, Google Analytics 4 for GTM analytics, Trustpilot for testimonials & social proof and Collabstr for influencer & creator marketing, each the leading tool in that category on published criteria. - Profile: https://saastracker.org/products/uppromote - Category: Affiliate & Referral Programs (https://saastracker.org/categories/affiliate-referral) - Web version: https://saastracker.org/products/uppromote/stack ## The stack, category by category | Category | Ideal pairing | Because | Benefit | | --- | --- | --- | --- | | Subscription Billing | [Paddle](https://saastracker.org/products/paddle) (Category Leader) | UpPromote lists tax and invoice management is not the full US compliance package among its limits. Paddle adds retain, inherited from ProfitWell. | Recurring revenue bills, retries and reconciles itself, including the tax nobody wants to calculate. | | Email Service Providers | [Mailchimp](https://saastracker.org/products/mailchimp) (Category Leader) | UpPromote is built for referrals, not ESPs. Mailchimp adds Customer Journey Builder. | An opt-in audience is owned rather than rented, and reaching it costs nothing per send. | | Landing Page Builders | [Unbounce](https://saastracker.org/products/unbounce) (Category Leader) | UpPromote is built for referrals, not landing pages. Unbounce adds popups and sticky bars. | A campaign page ships the same afternoon without waiting on an engineer. | | GTM Analytics | [Google Analytics 4](https://saastracker.org/products/google-analytics) (Category Leader) | UpPromote lists the performance fee is the dominant cost once a program works among its limits. Google Analytics 4 adds data-driven attribution across Google and non-Google channels. | Spend gets attributed to revenue, so the channel that works is the one that gets funded. | | Testimonials & Social Proof | [Trustpilot](https://saastracker.org/products/trustpilot) (Category Leader) | UpPromote is built for referrals, not social proof. Trustpilot adds google-licensed review partner status feeds Seller Ratings. | Real customer proof sits on the pages where people decide, not only on a review site. | | Influencer & Creator Marketing | [Collabstr](https://saastracker.org/products/collabstr) (Ease of Use) | UpPromote lists tier crossovers arrive early and are not signposted among its limits. Collabstr adds you can hire for real on the free plan. | Creators get found, briefed and paid on performance, rather than on a flat fee and hope. | ### Paddle for Subscription Billing UpPromote lists tax and invoice management is not the full US compliance package among its limits. Paddle adds retain, inherited from ProfitWell. Recurring revenue bills, retries and reconciles itself, including the tax nobody wants to calculate. The merchant of record model genuinely removes global tax registration, filing, and remittance from your company, which is the only part of billing that carries legal risk rather than operational annoyance. Creem holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ### Mailchimp for Email Service Providers UpPromote is built for referrals, not ESPs. Mailchimp adds Customer Journey Builder. An opt-in audience is owned rather than rented, and reaching it costs nothing per send. Predictive lifetime value and purchase likelihood, plus send time optimization, are capabilities most competitors at this price do not offer at all. Sender holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ### Unbounce for Landing Page Builders UpPromote is built for referrals, not landing pages. Unbounce adds popups and sticky bars. A campaign page ships the same afternoon without waiting on an engineer. Smart Traffic is a real product advantage, not marketing language: per-visitor routing across variants is something almost no competitor at this price offers. Carrd holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ### Google Analytics 4 for GTM Analytics UpPromote lists the performance fee is the dominant cost once a program works among its limits. Google Analytics 4 adds data-driven attribution across Google and non-Google channels. Spend gets attributed to revenue, so the channel that works is the one that gets funded. Free raw event export to BigQuery gives genuinely unlimited retention and unsampled analysis for teams with SQL skills. Umami holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ### Trustpilot for Testimonials & Social Proof UpPromote is built for referrals, not social proof. Trustpilot adds google-licensed review partner status feeds Seller Ratings. Real customer proof sits on the pages where people decide, not only on a review site. The free tier is genuinely useful, with a claimed profile, unlimited public replies, and 50 invitations a month at no cost and no card. Judge.me holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ### Collabstr for Influencer & Creator Marketing UpPromote lists tier crossovers arrive early and are not signposted among its limits. Collabstr adds you can hire for real on the free plan. Creators get found, briefed and paid on performance, rather than on a flat fee and hope. Global payout and tax handling across roughly 150 countries removes the finance work that usually limits small teams to domestic creators. ## FAQ ### What is the best stack to run with UpPromote? UpPromote is a referrals tool, and a team running it still has 6 neighbouring categories to staff. The pick in each is Paddle for subscription billing, Mailchimp for email service providers, Unbounce for landing page builders, Google Analytics 4 for GTM analytics, Trustpilot for testimonials & social proof and Collabstr for influencer & creator marketing, each the leading tool in that category on published criteria. ### What do I pair with UpPromote for Subscription Billing? Paddle. UpPromote lists tax and invoice management is not the full US compliance package among its limits. Paddle adds retain, inherited from ProfitWell. Recurring revenue bills, retries and reconciles itself, including the tax nobody wants to calculate. ### How many tools do I need alongside UpPromote? UpPromote sits next to 6 other categories in a working referrals stack, and its own profile names the gap each one fills. Most teams staff the first two or three and add the rest as the motion grows. ### Is Collabstr worth adding alongside UpPromote? UpPromote lists tier crossovers arrive early and are not signposted among its limits. Collabstr adds you can hire for real on the free plan. Creators get found, briefed and paid on performance, rather than on a flat fee and hope. --- Source: SaaSTracker (https://saastracker.org), an independent editorial project. Pairings are the leading tool in each complementary category, chosen on published criteria: https://saastracker.org/methodology. Placement cannot be purchased.