SignatureProfiler

Signature enhancement for Mail

This plugin for Mail gives you extra functionality for managing signatures if you have multiple email accounts. In addition, it allows you to integrate iTunes, Skype™ status and command line scripts into your signatures as well.

Tealeaves

Infusionsoft workflow inside Mail on your Mac

This plugin for Mail allows you to access your Infusionsoft customers and data from a selected message’s email address.

Tealeaves used to be called Sidebar for Infusionsoft – so if you are looking for that product, this is it!

Mail Plugin Manager

The Missing Manager for OS X Mail

This application helps you to manage the plugins that you have installed for OS X Mail.