after upgrading to jira-server 8.5, email notifications stopped working

[Deleted user]

in administration-> mail-> outgoing mails test mails work, the default notification scheme is active in the project, but when creating and working on issues no emails are sent, please help where I can find the reason for this condition

[Petter Gonçalves]

Hello @[deleted]

Sorry to hear you are facing this problem.

Since the notification problem started to happen after JIRA upgrade, I believe you might be facing the problem described in the documentation below:

- After upgrading JIRA some specific users don't receive mail notifications 

The mentioned problem is caused by database not configured with a supported collation. JIRA needs to use a case-sensitive collation (e.g. for MySQL the database needs to be created using utf8_bin).

Can you try the diagnose and resolution steps in the documentation?

If that is not the problem you are facing, please try the steps of the troubleshoot guide below and provide us with any useful logs you get:

Troubleshoot notifications in Jira 

P.S: Before sending the logs, make sure it does not contain any sensitive information

Let us know if this information helps.