Seamlessly integrate via robust API and pre-built app connections to sync data, automate workflows, and embed email marketing into your existing tech stack.
OptiPub is API-first — everything you can do in the interface, you can do programmatically. Connect your stack, sync your data, and automate your workflows without hitting walls.
A complete, API-first platform
Our full REST API covers subscribers, segments, campaigns, sends, reporting, content, and more. Anything available in the OptiPub UI is available through the API, so you can build OptiPub into your own systems exactly how you need.

Pre-built integrations and Zapier
Connect the tools you already use — Twilio, ThriveCart, SamCart, Wistia, CleanTalk, Slack, Gmail Postmaster Tools, and Outlook SNDS — and reach thousands more through our Zapier partnership, no code required.
Webhooks for real-time data
Push events from OptiPub to your own systems the moment they happen, so your CRM, analytics, and internal tools always stay in sync.
What you get
- A full REST API covering the entire platform
- Pre-built integrations with major tools
- Thousands more connections via Zapier
- Real-time webhooks for event-driven workflows
- The flexibility to build OptiPub into any stack
Better together
The API is the foundation for OptiPub’s extensibility. Embed experiences with SDK + Elements, let AI assistants drive it through the MCP Server, and speed up creation with AI Tools.
Build OptiPub into your stack
See how the API and integrations connect OptiPub to everything you use.
Schedule a Demo