Create signatures, account defaults, and recipient rules

Create one signature type

1. Open Settings → Email signatures → Signatures and create or edit a named signature.
2. Choose one type: HTML signature, Plain-text signature, Image signature, or Drawpad signature.
3. Enter content for that type. Changing type/content clears incompatible signature content rather than combining all four types.
4. Select Save signature and wait for confirmation. Signature content is saved manually, unlike most Settings fields.

Draw or upload a signature

Drawpad accepts mouse, pen, or touch. Review the drawing, save it, and use Download PNG for a transparent-background image. Drawing signatures become images in HTML emails and cannot be rendered visually in plain text. Image upload accepts PNG, JPEG, GIF, or WebP up to 4 MB.

Account defaults

In Account defaults, choose a saved signature and one or more sending accounts. Individual emails and Marketing campaigns are enabled initially; choose the scopes you need and save the assignment. Renaming a sending account does not detach its default.

Recipient rules and precedence

In Recipient rules, assign a signature to one or more exact recipient email addresses. Individual emails are enabled initially; campaigns are off unless you explicitly enable them. Individual compose/reply uses a primary-To recipient rule, then an account default, then the global default. Cc/Bcc are not used for recipient-rule selection. A manual selection, including No signature, remains fixed.

A campaign uses the main signature you select. SMTP rotation does not change it. Only recipient rules with Marketing campaigns enabled override it for matching recipients. A saved draft keeps a snapshot of the signature/rules; re-edit and save it to capture later changes.

Check images and files

Remote pictures and attached files behave differently; some clients hide remote images. Send a test to yourself and inspect signatures, links, files, and total size. See received attachment preview/download.