Email Signatures per Mailbox
WarmySender allows you to set a unique email signature for each mailbox and insert it into your campaign emails using the {{signature}} merge tag.
Setting Up Your Signature:
Each mailbox has its own signature, configured in the mailbox settings dialog under the Signature tab. Go to Email Infrastructure > Mailboxes, click the three-dot menu (⋮) on any mailbox, select "View Details", and go to the Signature tab. Signatures support both plain text and HTML, so you can include formatted text, links, or simple styling.
Using {{signature}} in Campaign Emails:
In the campaign editor, insert the {{signature}} variable from the variable picker (or type it manually). When the email is sent, {{signature}} is replaced with the signature stored on the sending mailbox. If a campaign rotates across multiple mailboxes, each recipient automatically gets the correct signature for whichever mailbox sends their email.
Different Signatures per Mailbox:
Since signatures are stored per-mailbox, you can have a different signature for each mailbox without creating separate campaigns. Simply set each mailbox's signature in its Signature tab, then use {{signature}} in your template — the system handles the rest.
Signature Best Practices:
- Keep signatures short — 3-5 lines maximum for cold outreach.
- Include your name, title, company, and one contact method (phone or LinkedIn).
- Avoid images in signatures for cold outreach — they can trigger spam filters and increase email size.
- Avoid large HTML signatures with logos and social icons in initial outreach.
- You can also use sender merge tags ({{sender_name}}, {{sender_company}}) alongside or instead of {{signature}} for automatic personalization.
- Test your signature renders correctly by using the 'Send Test' feature in the campaign editor.
Note: Signatures are not automatically appended — you must include {{signature}} in your email template body where you want the signature to appear.