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Dynamic signatures for your messages

multi-action image

Easy Signature Control

SigPro gives you the ability to create a signature once and use it for all accounts, even if it has account specific info in it, like your email address. Elements that can be added generically include the email address, user name & account name.

Insert Content From a Script

Using SigPro, you can insert whatever text you want into your signature by calling a script at the moment the message is created. The possibilities are endless using this capability!

Include Random Quotes

If you like to have a witty quote in your email messages, you can compile a list of them in a text file and SigPro will insert a random one for you in each new message.

Signature with iTunes Info

Show What You are Listening To

If you like to show the world what you are listening to while working, SigPro has you covered, allowing you to display what is currently happening in iTunes. You can even customize the output based on whether music is playing, paused or stopped.

Special Content for Each Account or Alias

Each of your email accounts - and even the aliases within an account - can have separate customized content. So you can add that long disclaimer section to your work account, while having a different look and feel to your other aliases. The image to the left shows 2 distinct signature for each alias on an account.

Alias Signatures

Set Signature Content

Easily Set Signature Content

With SigPro, it’s easy to set the content of your signatures to complex mockups. If you have a webpage that you want to make into a signature, SigPro allows you to simply enter the address or open the html file and insert the contents. You can add links and images that are on the web as well.


  • The latest version of El Capitan 10.11 and macOS Sierra 10.12
  • Mail

Release 2.0.1

(2016-10-07 15:57:12)

  • Fixed: Add error dialogs for signature conversion issues.
  • Fixed: Fix URL w/Image placeholder which was not usable.
  • Fixed: Fix an issue where the update checker was not working.
  • Fixed: Fix crash in conversion of signatures.
  • Fixed: Fix crash that could happen if a signature could not be found from the data in the prefs.
  • Fixed: Fix crash that could happen if the SigPro folder was not already created.
  • Fixed: Fix display issues on Sierra where the top of the signature views could be hidden.
  • Fixed: Fix issue where quotes with simple HTML would be inserted as text.
  • Fixed: Fix issue where quotes would not load.
  • Fixed: Fix issue where the registration dialog would be shown after another sheet is closed.
  • Fixed: Fix the User Name value, especially for accounts with multiple email addresses.
  • Fixed: Fixes issue where a lot of aliases would make the email list overlap the other controls.
  • Fixed: Replies where not always selecting the correct message for multi-email accounts.

Release 2.0

(2016-09-27 13:36:57)

  • New: Add Sigpro sub menu in the Mail menu for quick access to certain features.
  • New: Add the ability to include your latest blog post in a signature.
  • New: Added drag and drop editing of placeholders in the signatures for easier editing.
  • New: Completely new look for the preferences and setup is much easier.
  • New: Integration with Mail Act-On outbox rules to set a signature based on criteria.
  • New: SigPro prefs are now directly integrated with the Signature prefs for simpler editing.
  • OS Support: Adds support for macOS Sierra

See all of the release notes for SigPro