Transactional email API by Gap Info

Ship email your users can trust.

Send verification emails, passwordless login codes, account alerts, and lifecycle messages through one reliable email API with clear delivery logs and bounce monitoring.

Start building →Read the docs

Delivery workspace

Delivery logsLive

DomainsVerified

API accessReady

Monitor messages, provider responses, and sending domains

Built for teams that care about delivery, clarity, and control.

◎

One clean API

Send transactional messages from Workers, applications, or your existing SMTP client.

↗

Know what happened

Track delivery, bounces, and failures from one calm, useful dashboard.

⌁

Ready to scale

Separate projects, API keys, domains, and permissions as your product grows.

Developer experience

From first request to first delivery in minutes.

The Send API gives product teams one reliable place to manage verification emails, account alerts, transactional messages, delivery tracking, and lifecycle email.