Send email in Zapier with SMTP by Zapier

SMTP by Zapier sends a message through any SMTP server you give it, so Zaps can send from your own domain through Postwing instead of a shared Zapier address. It has one action, Send Email, and one quirk worth knowing before you start: it cannot use port 465.

SMTP connection settings

Connect SMTP by Zapier

Add an action step, choose SMTP by Zapier and the Send Email event, then create a new connection:

Configure Send Email

From Email is what DKIM, SPF and DMARC are checked against. An address on any other domain is refused by the relay, and would fail DMARC at the recipient even if it were not.

Send a test email

Map your own address into To and test the step. A failure shows the SMTP server's own reply, which tells you whether the port, the encryption or the credentials are wrong.

Or: Webhooks by Zapier

On a paid Zapier plan you can call the REST API instead. Add Webhooks by Zapier with the POST event and set:

Zapier then sends this body:

{
  "recipient": "customer@example.com",
  "subject": "Your order is confirmed",
  "body": "<p>Thanks! Your order ships tomorrow.</p>",
  "sender": "Acme <noreply@your-domain.com>",
  "auth": {
    "username": "token-login@your-domain.com",
    "password": "your-token-password"
  }
}

recipient takes one address; Data pairs cannot build the to array. sender must include a display name and be on your verified domain. The token's password lives in the step, so anyone who can edit the Zap can read it. Every other field is in the API reference.

Troubleshooting