The Developer API for agencies

An agency writes and designs email for other people, often under deadline. It needs to reuse good work, send from the right domain each time, and give developers a clean way to add email to the sites they build.

  • Designs that can be reused
  • Sending from the right domain
  • Email built into client sites
With the Developer API

Add email to the sites and apps you build

  • Keys limited to one domain

    Give each project a sending-only API key restricted to its domain, so one site can't send as another.

    How it works
  • Form and sign-up emails

    Send contact-form notifications and sign-up confirmations from the site's server with one `POST /emails` call.

    How it works
  • Logs for debugging

    Every API request is kept for 30 days with the full request and response, so you can see why a send failed.

    How it works
Also in your account

Where the other products fit

iResendly Marketing

Design, write and send campaigns without starting from scratch

  • Import a client's HTML. Upload an existing HTML email and turn it into editable blocks, or keep the original code exactly as it is.
  • Write with AI. Draft an email from a short brief, rework a section, or get subject ideas, then read and edit before sending.
  • Several sending domains. Verify each domain you send from; Premium allows unlimited sending domains. Each domain belongs to one iResendly account.
Agencies with iResendly Marketing
iResendly Mail

Mailboxes for your team, with addresses for each kind of work

  • A mailbox per person. Create mailboxes one at a time or from a CSV file, with storage and sending limits you choose.
  • Aliases like newbusiness@ and billing@. Point them at the mailbox of the person who handles them; plus addressing works too.
  • Consistent signatures. Give every mailbox a profile-card signature with the person's name, details and photo.
Agencies with iResendly Mail