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Mozilla Thunderbird

To connect Thunderbird to your Catmail account, you will need to use either POP or IMAP.  This will give you access to your email, but not your calendar.  The required server settings are:

  • Server name: outlook.office365.com
  • Port: 993
  • Encryption method: SSL
  • Server name: outlook.office365.com
  • Port: 995
  • Encryption method: SSL
SMTP (outgoing mail):
  • Server name: smtp.office365.com
  • Port: 587
  • Encryption method: TLS

Note: You should configure either POP or IMAP for your incoming mail, not both.  SMTP needs to be configured regardless of which incoming method you choose.