Email Host Migration is now installed.
What changed
- Detects legacy mail.tronsoft.net IMAP settings.
- Automatically uses outlook.office365.com port 993 SSL/TLS instead.
- Automatically uses smtp.office365.com port 587 TLS for legacy SMTP settings.
- Leaves custom non-Tronsoft mail hosts unchanged.
- Displays an Admin notice when legacy settings are being migrated.
- Does not expose or overwrite mailbox passwords.

