I've posted a test release of Portable Thunderbird 220.127.116.11 bundled with GPG and Enigmail (I'll be making packages available without them in the final release). This release sees a few changes:
1. Updated to use App/Data directories
2. Updated to newest GPG and Enigmail
3. Profile updating for GPG path
4. Registry key backup/restore to avoid "Would you like TB to be the default mail client?" issue on launch
The updated GPG/Enigmail settings and the registry key backup/restore is what needs the most testing. The registry backup is not done when AllowMultipleInstances is on due to conflicts.
Please do not share this link outside of PortableApps.com.
All feedback is appreciated.