Email broke right after a Magento upgrade. Do you fix that?

Yes, this is common. An upgrade (or a security patch) can reset email transport config, change the queue/consumer setup, deprecate a template directive, or remove a custom SMTP module that wasn’t upgrade-safe. We compare the before/after config, restore or re-point the transport, re-validate the templates against the new version’s rules, and confirm the async queue and cron are wired correctly for the version you’re now on (2.4.4-2.4.9).