Send emails from your custom domain with a simple HTTPS API. Same DKIM signing and quotas as SMTP — works even on networks where port 587 is blocked.
Get StartedSend transactional email straight from your backend with a single HTTPS request. No SMTP library, no connection handling.
Many serverless platforms block outbound SMTP ports. HTTPS works everywhere your code runs.
Corporate firewalls and cloud providers often block port 587. Send over port 443 instead — no special network rules needed.
A curl-friendly REST API with the same credentials as SMTP. Test from the command line, ship from any language.
Cron jobs, CI pipelines, and monitoring alerts can send email with one HTTP call — no mail client configuration.
Order confirmations and notifications from your brand's domain, with a tracking ID for every message you send.
POST your from, to, subject, and body — we build the MIME message for you. Need full control? Send a raw MIME message instead.
Authenticate with HTTP Basic Auth using your existing SMTP credentials. No separate API keys to create or manage.
Every message goes through the same sending pipeline as SMTP, so your domain's DKIM signature and sending quota apply consistently.
Every accepted message returns a tracking ID. Check its status any time — queued, sending, sent, or failed — and monitor your quota usage via the API.
Available on PLUS plan and above. No credit card required to get started.