Use cases

Add authentication and transactional email to a Next.js app with one platform and one API key — no separate Clerk plus Resend setup.

Add NPS, CSAT, and custom surveys to your SaaS with built-in distribution and analytics — tied to the same user record as auth and email.

Run onboarding and lifecycle email journeys triggered by your own product events — without bolting Loops onto your auth provider.

Add hosted authentication to a FastAPI backend with the AscendKit Python SDK — credentials, magic link, and OAuth without building auth yourself.

Build a multi-step onboarding journey driven by product events and timers, with email and surveys on the same user record.

Move off Clerk to AscendKit and keep user records in your own database — drop-in auth components with no hosted user store and no vendor lock-in.

You chose Better Auth for login. AscendKit is the commercial layer on top: verification email at scale, lifecycle journeys, surveys, and a dashboard — without leaving your own database.

Send transactional and lifecycle email on AWS SES without hand-configuring domain verification, DKIM, SPF, or DNS records — AscendKit automates the deliverability plumbing.

Adopt hosted-quality auth while user records stay in your own database — the own-your-data model that answers data-residency and lock-in concerns.

Ship Google, GitHub, and LinkedIn login without registering and maintaining your own OAuth applications — AscendKit's OAuth proxy uses shared credentials.

Add passwordless magic link sign-in to a Next.js app with built-in email delivery — no separate email provider to wire up for the link itself.

Add a pre-launch waitlist to your SaaS and convert it into real accounts at launch — waitlist, auth, and welcome email in one platform.

Win back inactive users with a timer-driven re-engagement journey that reads real product activity — no separate automation tool synced to your auth.

Add hosted auth and transactional email to a Remix app using AscendKit's Better Auth foundation — credentials, OAuth, and email from one project.

Add auth and transactional email to a React app built with Vite — drop-in components and one user record across auth and email.

Protect an Express API with AscendKit access tokens — verify tokens on each request and resolve every call to a project user.

Secure a Hono API with AscendKit access tokens — lightweight token verification that resolves each request to a project user.

Close the loop on customer feedback by triggering surveys from lifecycle events and acting on responses automatically — all on one user record.

Subscribe to auth and lifecycle events with signed, filterable webhooks — verified in both the JS and Python SDKs.

Set up auth, email, journeys, and surveys conversationally through AscendKit's MCP server in Claude Code, Cursor, or any MCP client.