[lilactown]

I tried using a combo of mbsync, notmuch, and notmuch-emacs to start migrating away from Gmail's UI (and eventually moving away from their service).

I found, though, that mbsync failed to download updates after the initial bulk load.

Has anyone else run into this, and/or found a good way to use notmuch with gmail?

[encryptluks2]

I've not experienced this. Arch Linux has a good guide on setting up mbsync. However, the best documentation is really mbsync's manual... Although tedious, really understanding it makes things a lot easier and I believe would resolve your issues.

[nextos]

Maybe you ran into their daily IMAP usage cap?

[lilactown]

That's a reasonable hypothesis. My experience was mbsync would hang for many minutes, and eventually when I revisited the terminal it was in it had failed with a nondescript error.