Custom Sender Address and Reply 1.0.0
Source Code License
Custom License
Parts from Flexible Identity version 1.0.4: GNU General Public License, version 3.0
Parts from Reply as Original Recipient version 1.0: Mozilla Public License, version 2.0
All subsequent (my) changes:
Dual-licensed under both GNU General Public License version 3.0 and Mozilla Public License version 2.0
To create your own collections, you must have a Mozilla Add-ons account.