Our organization uses Vaultive email encryption (vaultive.com) which means that there is an encryption process in between the email content and the end user.
Given the same machine, same Secure IMAP server, same user name and password, same network access: Outlook and Opera Mail can access the account and access the messages un-encrypted. But Jira Server (hosted on that machine) and Jira Cloud only get encrypted text.
I have contacted Vaultive with this question. But I have wondering if anyone here has had some experience with Jira + Vaultive?