Bugzilla

The try build is here: https://treeherder.mozilla.org/jobs?repo=try-comm-central&revision=33b3e3087465284c8de4b2d052a2b0b45725b8c0. You can get the appropriate link for installation there or use these direct links:

Win64: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Pa-OVjgtTcWS3sYtokZK1A/runs/0/artifacts/public/build/install/sea/target.installer.exe

Linux64: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/YIL6l7npRI2YlxEvIQKT0A/runs/0/artifacts/public/build/target.tar.bz2  (Just unpack to directory thunderbird, cd to thunderbird and run from command line thunderbird.)

Macosx64: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/adzhnpACSUKNGJ99MTl0Ig/runs/0/artifacts/public/build/target.dmg

To test this proposed change you should set everything under ```browser.cache.``` back to default and it should be able to bring in the messages with large attachments, I think.

Note: Instead of caching messages to memory, this will now cache them to disk files. On linux (and maybe OSX, not sure) the disk cache files appear at $HOME/.cache/thunderbird/<your-tb-profile-dir-name>/cache2/entries/ . Each message, when first opened, is download and stored in its own file. There will be a few other system related files here too.
For windows, the cache2\entries\ are at the top level of where the profile is stored.
When TB shuts down, the cache files are deleted so messages will have to be re-downloaded before being re-cached. (This is the same as cache to memory did.)

The try build is here: https://treeherder.mozilla.org/jobs?repo=try-comm-central&revision=33b3e3087465284c8de4b2d052a2b0b45725b8c0. You can get the appropriate link for installation there or use these direct links:

Win64: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/Pa-OVjgtTcWS3sYtokZK1A/runs/0/artifacts/public/build/install/sea/target.installer.exe

Linux64: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/YIL6l7npRI2YlxEvIQKT0A/runs/0/artifacts/public/build/target.tar.bz2  (Just unpack to directory thunderbird, cd to thunderbird and run from command line thunderbird.)

Macosx64: https://firefox-ci-tc.services.mozilla.com/api/queue/v1/task/adzhnpACSUKNGJ99MTl0Ig/runs/0/artifacts/public/build/target.dmg

To test this proposed change you should set everything under ```browser.cache.``` back to default and it should be able to bring in the messages with large attachments, I think.

Note: Instead of caching messages to memory, this will now cache them to disk files. On linux (and maybe OSX, not sure) the disk cache files appear at $HOME/.cache/thunderbird/<your-tb-profile-dir-name>/cache2/entries/ . Each message, when first opened, is download and stored in its own file. There will be a few other system related files here too.
For windows, the cache2\entries\ are at the top level of where the profile is stored.
~~When TB shuts down, the cache files are deleted so messages will have to be re-downloaded before being re-cached. (This is the same as cache to memory did.)~~
Edit: Actually the disk cached messages or parts survive a restart and are used in the new session.