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Quickstart Dashboard tour SDKs and OpenAPI AI tools Recipes Migrating to ZapSMTP

Sending

Sending email Domains & DNS setup Templates and variables Email template editor SMTP relay

Events & data

Webhook events Click actions Tracking and analytics Receiving email

Operations

Deliverability guide Testing & simulator Errors, limits & paging Teams & client accounts

API reference

Emails Domains Webhooks Click actions Templates Variables Modules, images & timers Received emails Inbound setup Suppressions Statistics Keys & SMTP credentials

List API keys Create an API key Update an API key Revoke an API key List SMTP credentials Create SMTP credentials Revoke SMTP credentials

Logs & usage Simulator & IPs

OpenAPI 3.1 spec llms.txt

Test API keyRuns examples for real against your account. Test keys only; kept in this tab, never stored on our side. Get a key

ZapSMTP / Docs / API reference

API keys & SMTP credentials

Use separate keys per application and environment. Test keys (zap_test_…) run the full pipeline without delivering. SMTP credentials have their own username and password and never authorize the HTTP API.

GETList API keys/v1/api-keysList active API keys (newest first); tokens are never returned..POSTCreate an API key/v1/api-keysCreate an API key; the full key (token) is returned only once..PATCHUpdate an API key/v1/api-keys/{id}Rename a key or change its permission and restrictions.DELETERevoke an API key/v1/api-keys/{id}Revoke an API key immediately..GETList SMTP credentials/v1/smtp-credentialsList active SMTP credentials plus the plan limit and relay settings..POSTCreate SMTP credentials/v1/smtp-credentialsCreate an SMTP credential; the password is returned only once..DELETERevoke SMTP credentials/v1/smtp-credentials/{id}Revoke an SMTP credential..