Email infrastructure for your app
iResendly makes email marketing, business mailboxes and an email API, in one account. The Developer API lets your app send transactional and marketing email with a few lines of code.
Why we built the Developer API
Every app needs to send email: sign-ups, receipts, password resets. Developers shouldn't have to become deliverability experts to get them into the inbox, or guess what happened when they don't.
So the API is plain HTTPS and JSON from any language, sends are safe to retry, and every delivery, bounce and complaint reaches you as a signed webhook. Your account's bounce and complaint rates are checked every hour.
- A REST API that works from any server language
- Signed webhooks for every email event
- Idempotent sends, safe to retry
- A free plan to start, no card needed
Three products, one account
Start with the one you need and add the others whenever you like. They share your account and your verified domains.
The principles behind every decision
- Your reputation comes firstA sender's reputation takes months to build and one bad send to lose. Our safeguards run by default, not as an add-on.How we build
- Prices you can readOur prices are published on our pricing pages, and no trial asks for a card.See pricing
- Say only what's trueOur pages and docs describe what the product does today, checked against the code, not what we hope it will do.
- One account, your choice of productsUse one product or all three. Verified domains are shared; each product keeps its own plan and its own sign-in.
Reach the right people
Write to the team that handles it, or send us a message from the contact page.