LeslieFH
Thunderbird is not present at all in "Alarms & Reminders" special permissions section
That's not accurate. It is present there.
Oggyo
Push is no longer in global receive email setting, it's now in each folder setting.
[...]
Again, the OP should check the folder sync and notification settings (Manage Folders).
No, because the OP had already stated that Push would already work, which would make that completely obsolete.
Oggyo
Just FYI - mine is off (not allowed) and notifications work fine (scheduled pull).
There's no reason to use Pull when Push can be used instead.
And it's required for Push: https://support.mozilla.org/en-US/kb/configure-push-email-thunderbird-android#w_alarms-reminders-permission-for-android-13-and-above