A modernized version of the EAS provider for TbSync v5 for Thunderbird 153

This version has gone through extensive testing, but it is still an early beta release. Please be prepared for data duplication or data loss issues, and have a backup of your calendar and contacts at hand.

You can install the beta version of the EAS provider by dragging the .xpi file links from the Assets section below into Thunderbird’s Add-on Manager. Thunderbird will see the link and download and install the add-on automatically. You also need the beta version of TbSync v5.

Release plan

This version will auto-update to every new released beta version. At some later time, the version will also be published on ATN (addons.thunderbird.net) for general availability.

Technical notes

This rewrite is on track to eliminate the use of Experiment APIs and become fully compatible with Thunderbird's Release Channel. TbSync and its providers will become pure WebExtensions.

The current beta versions still rely on Experiments for:

• Migrating existing data to WebExtension storage
• Calendar support

See: #309 for discussions.

Important bug fixes:

• Fixed multiple migration issues
• return to legacy DeviceOS values (WINNT, Linux, Darwin)
• provider should now correctly handle timezone in EAS v14.*
• correctly handle recurrence across DST
• better contact modification check
• fix data loss bug
• fix attempt for status 141 and status 165

New features in v5:

• EAS GAL is back (global directory lookup)
• EAS provider allows setting the DeviceOS value manually in the global EAS add-on options (#257)