Office 365, Email, Exchange, IMAP Email Access to Exchange

This page contains information about how to connect to the Technology Services Exchange email and calendar service using the IMAP protocol, which is used by some mobile devices and email clients.

Limitations of IMAP

The configuration given below uses the IMAP email protocol rather than the Exchange protocol. This means that many email clients which don't have full Exchange or ActiveSync support can probably connect to the Exchange server using IMAP instead.

Note that IMAP only provides an email connection. You won't receive calendar information through IMAP.

IMAP account settings

Due to the number of different IMAP email clients, it's not possible to provide a menu-by-menu and screen-by-screen set of instructions for configurations. However, once you locate your email client's configuration section, these are the settings you will use.

IMAP Configuration

  • Username:
  • Password: Active Directory password
  • Email address:
  • Incoming mail server:
  • Incoming mail server: requires authentication/normal password
  • Incoming mail server security: port 143 and TLS (Thunderbird uses STARTTLS, other unsupported clients use SSL and 993)
  • Outgoing mail server:
  • Outgoing mail server: requires authentication/normal password
  • Outgoing mail server (SMTP) port: 587
  • Outgoing mail server security: TLS (Thunderbird uses STARTTLS, other unsupported clients use SSL)

Keywords:IMAP, Email, Exchange, office 365, exchange online   Doc ID:47615
Owner:Office 3.Group:University of Illinois Technology Services
Created:2015-02-25 16:25 CSTUpdated:2021-02-03 10:11 CST
Sites:University of Illinois Technology Services
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