Send email
One POST /v1/emails/send call delivers to one or up to 50 recipients, with
templates or raw HTML. Send your first email.
Send email
One POST /v1/emails/send call delivers to one or up to 50 recipients, with
templates or raw HTML. Send your first email.
Scoped API keys
Bearer keys (tmk_...) gated by fine-grained scopes like email:send.
How authentication works.
Idempotent sends
An Idempotency-Key header makes retries safe — a send is never duplicated.
Idempotency guide.
Signed webhooks
Subscribe to delivery, bounce, and complaint events, verified with an HMAC signature. Webhooks guide.