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Setting up Office 365 Accounts

Here are Microsoft's recommended settings for Office 365's email service.

Note: If you don't know how to set up an email account manually in Postbox, see "Manual Setup" here.

Incoming Email Settings

Postbox always recommends that you use IMAP vs. POP.

IMAP (recommended):

  • User Name — full email address
  • Server Name — outlook.office365.com
  • Type — IMAP
  • Port — 993
  • Security — SSL/TLS

POP:

  • User Name — full email address
  • Server Name — outlook.office365.com
  • Type — POP
  • Port — 995
  • Security — SSL/TLS

Outgoing Email Settings

  • Server Name — smtp.office365.com
  • Port — 587
  • Security — STARTTLS (if this doesn't work for you, try SSL/TLS)

Other Important Settings for Office 365 Accounts

Please be sure to check out these help articles: