Gmail Signatures

This extension for Firefox automatically inserts HTML signatures into your Gmail messages based on which address you are sending from. Works for Compose Message and Reply/Forward.

Latest Version:1.17.3

Gmail Signatures


  • Works for Compose Mail, Reply, and Forward
  • Support for single or multiple email addresses
  • Create a different signature for each email address you use in your Gmail account
  • Supports up to four signatures per address
  • Real-time signature preview while editing signature HTML
  • Signature automatically inserted into message above (or optionally below) quoted text
  • Support for special characters
  • Easy setup and configuration interface


Arabic (partial support – soon), Chinese, English, French, German, Greek, Hungarian (soon), Italian, Korean, Portuguese (European & Brazilian), Russian, Slovenian, Spanish, Sweedish


  • Remotely storing signatures for synchronization across computers
  • Filters to be able to specify default signatures for various situations
  • Stationary option to easily insert saved stationary or HTML templates
  • Option to choose the default font used when composing emails

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