Guides that get it done
Practical, step-by-step articles on sending email from your app, written from how iResendly really works.
Getting started3 min read
Send your first email with the API
Turn on the Developer API, verify a domain, create a sending key and make your first POST /emails call, in cURL, Node.js or Python.
Read the guide- Webhooks4 min readVerify webhook signatures before you trust an eventCheck the Standard Webhooks signature on every event, handle retries without doing the same work twice, and rotate secrets without downtime.
- Reliability4 min readRetries done right: idempotency keys and rate-limit headersWhich errors to retry, how to retry without sending twice, and how to stay inside your plan's requests per second.
- Deliverability4 min readProtect your sender reputation with suppressions and eventsHow account health is measured, what suppression does for you, and how to use bounce and complaint events to keep your own data clean.