Hi Mikhail - Welcome to the Atlassian Community!
Many times this results from Atlassian blacklisting the email addresses for some reason. I suggest you open a support ticket with Atlassian to see if that is the case.
👋 Hi there Jira Community! A few months ago we shared with you plans around renaming epics in your company-managed projects. As part of these changes, we highlighted upcoming changes to epics on...
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