Skip to content
Dispatch

Generic SMTP

The Generic SMTP provider relays to any SMTP smart host - Office 365, Postfix, AWS SES SMTP, and similar. Add it from the dashboard’s Relays page, choose SMTP, and fill in the settings below. See the provider overview for how relays fit into routing.

How it works

Section titled “How it works”

Dispatch delivers over SMTP using MailKit, sending the raw MIME message. The envelope recipients, CC, BCC, and attachments are all preserved - see message features for the full list (multiple To recipients, CC, BCC, text + HTML bodies, custom headers, and attachments).

Settings

Section titled “Settings”
Setting Required Description
Host Yes The SMTP server hostname.
Port Yes The SMTP port (default 25).
Username Yes The login username. Encrypted at rest.
Password Yes The login password. Encrypted at rest.
TLS mode Yes One of None, Auto, StartTls, or SslOnConnect.

Notes

Section titled “Notes”
  • Choose the TLS mode that matches your host: StartTls (often port 587), SslOnConnect (often port 465), Auto to negotiate, or None for plaintext.
  • For custom certificates, see TLS certificate configuration.
  • After saving, send a test email from the dashboard and watch the relay log live to confirm delivery.