POP3:
Outlook 2019 to 2010 (Win)
Outlook 2016 (Mac)
Mozilla Thunderbird
MacMail
IMAP:
Mozilla Thunderbird
MacMail
Outlook (Not recommended for IMAP)
Exchange:
Outlook 365, 2019 to 2013 (Win)
Outlook 2016 (Mac)
Thunderbird & TBSync Or Owl
MacMail
Sort Order:
99