# What pairs well with Retently > Retently is a retention tool, and a team running it still has 6 neighbouring categories to staff. The pick in each is Paddle for subscription billing, Amplitude for product analytics & session replay, Help Scout for customer support platforms, Userpilot for product onboarding & PLG, Mailchimp for email service providers and Knock for notification infrastructure, each the leading tool in that category on published criteria. - Profile: https://saastracker.org/products/retently - Category: Retention & Churn Prevention (https://saastracker.org/categories/customer-retention) - Web version: https://saastracker.org/products/retently/stack ## The stack, category by category | Category | Ideal pairing | Because | Benefit | | --- | --- | --- | --- | | Subscription Billing | [Paddle](https://saastracker.org/products/paddle) (Category Leader) | Retently is built for retention, not billing. Paddle adds merchant of record model genuinely. | Recurring revenue bills, retries and reconciles itself, including the tax nobody wants to calculate. | | Product Analytics & Session Replay | [Amplitude](https://saastracker.org/products/amplitude) (Category Leader) | Retently lists it prevents no churn among its limits. Amplitude adds financial transparency no competitor offers. | Feature usage and drop-off are measurable, so a roadmap argument can end with evidence. | | Customer Support Platforms | [Help Scout](https://saastracker.org/products/help-scout) (Category Leader) | Retently lists support on Basic is limited to knowledge base and email among its limits. Help Scout adds serious compliance posture for a company this size. | Questions arrive in one queue with a history attached, instead of scattered across personal inboxes. | | Product Onboarding & PLG | [Userpilot](https://saastracker.org/products/userpilot) (Category Leader) | Retently is built for retention, not onboarding. Userpilot adds goal tracking per experience. | New users reach the thing the product is for without a call, and the drop-off shows up in the data. | | Email Service Providers | [Mailchimp](https://saastracker.org/products/mailchimp) (Category Leader) | Retently is built for retention, not ESPs. Mailchimp adds Customer Journey Builder. | An opt-in audience is owned rather than rented, and reaching it costs nothing per send. | | Notification Infrastructure | [Knock](https://saastracker.org/products/knock) (Category Leader) | Retently is built for retention, not notifications. Knock adds workflows as code with CLI. | Product events reach people on the channel they actually read, without building a sender for each one. | ### Paddle for Subscription Billing Retently is built for retention, not billing. Paddle adds merchant of record model genuinely. Recurring revenue bills, retries and reconciles itself, including the tax nobody wants to calculate. The 5 percent rate is all-inclusive in a way competitors' are not: no separate international card surcharge, no currency conversion line, no payout fee, and no charge for the dunning engine or the analytics. Creem holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ### Amplitude for Product Analytics & Session Replay Retently lists it prevents no churn among its limits. Amplitude adds financial transparency no competitor offers. Feature usage and drop-off are measurable, so a roadmap argument can end with evidence. Two year data retention on the self-serve paid tier, longer than several rivals' defaults, which makes genuine year-over-year comparison possible without exporting. Mixpanel holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ### Help Scout for Customer Support Platforms Retently lists support on Basic is limited to knowledge base and email among its limits. Help Scout adds serious compliance posture for a company this size. Questions arrive in one queue with a history attached, instead of scattered across personal inboxes. Agent-facing AI is unlimited on the plans that include it, which is the opposite of how the customer-facing AI is sold and is the better deal. tawk.to holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ### Userpilot for Product Onboarding & PLG Retently is built for retention, not onboarding. Userpilot adds goal tracking per experience. New users reach the thing the product is for without a call, and the drop-off shows up in the data. The AI layer is unusually concrete for 2026 marketing: it queries your own product data rather than only generating copy. Product Fruits 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 Retently is built for retention, not ESPs. Mailchimp adds Customer Journey Builder. An opt-in audience is owned rather than rented, and reaching it costs nothing per send. Creative tooling is the best in the small-business tier, with a Creative Assistant that builds on-brand designs from your website and a shared Content Studio asset library. Sender holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ### Knock for Notification Infrastructure Retently is built for retention, not notifications. Knock adds workflows as code with CLI. Product events reach people on the channel they actually read, without building a sender for each one. The agent toolkit and MCP server are a genuine differentiator: workflows can be authored and edited from Cursor or Claude Code against your own repository. Novu holds Best Value in the same category, and is the swap to make when the budget matters more than the ceiling. ## FAQ ### What is the best stack to run with Retently? Retently is a retention tool, and a team running it still has 6 neighbouring categories to staff. The pick in each is Paddle for subscription billing, Amplitude for product analytics & session replay, Help Scout for customer support platforms, Userpilot for product onboarding & PLG, Mailchimp for email service providers and Knock for notification infrastructure, each the leading tool in that category on published criteria. ### What do I pair with Retently for Subscription Billing? Paddle. Retently is built for retention, not billing. Paddle adds merchant of record model genuinely. Recurring revenue bills, retries and reconciles itself, including the tax nobody wants to calculate. ### How many tools do I need alongside Retently? Retently sits next to 6 other categories in a working retention 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 Knock worth adding alongside Retently? Retently is built for retention, not notifications. Knock adds workflows as code with CLI. Product events reach people on the channel they actually read, without building a sender for each one. --- 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.