Bad news: I was asked by XenForo staff to relist add-on as commercial. Add-ons here can be ether commercial or free, hybrid licenses aren't allowed.
Email customizer add-on was released with unique license, that as far as I know was never used by any other add-on author: trial version can be downloaded in xenforo.com resource manager, if admin decides to use add-on he must purchase commercial version from my website.
Currently trial version of add-on is available only here, on xenforo.com resource manager. This serves double purpose:
1. Posting it only on xenforo.com prevents unlicensed XenForo customers from downloading it, forcing unlicensed users to ether purchase it or seek add-on elsewhere.
2. Anyone can download, comment, rate add-on, making add-on thread more alive than average commercial add-on. Which serves as advertising for potential commercial customers.
I won't post trial version anywhere other than here, so if I can't post it here, license has to change. This is unfortunate and many customers might be upset. I apologize, but there is nothing I can do about it.
Due to forced license change, new versions will be strictly commercial. New version will be posted later today. Changing this resource to commercial is not possible, so new one will have to be created.
Customers using trial version can use current version indefinitely. Latest version is stable, it should work fine with future versions of XenForo without any issues. If minor compatibility issues will arise in any future XenForo updates, I'll post instructions on how fix them. Most likely there won't be any changes until XenForo 2 that affect add-on. If you want to get rid of trial notice in admin panel, edit admin templates email_customizer_edit and email_customizer_index (its on one of first lines, you'll see where to edit. remove entire line).