ZMAIL - IMAP for Outlook Express

If you would like to learn more about the differences between POP and IMAP, please see the help topic, "POP vs. IMAP."

For increased security, we recommend that you use our secure (SSL) servers, as detailed below. Note: If your internal system configurations require non-SSL ports, please see the "Email Server Settings" page for our full list of available servers and ports.

To set up Outlook Express for IMAP, perform the following steps:

  1. In Outlook Express, select Tools / Accounts.
  2. Click the Add button, and select Mail from the resulting menu.

    Add Mail
  3. Enter your first and last name. This is the name that will appear in the From field of messages you send.
  4. Click the Next button.
  5. Enter your entire email address (e.g.,
  6. Click the Next button.
  7. Click the drop-down menu, and select IMAP.
  8. In the Incoming mail (POP3, IMAP, or HTTP) server box, enter the secure server name:
  9. In the Outgoing mail (SMTP) server box, enter the secure server name:

    Server address form
  10. Click the Next button.
  11. In the Account name box, enter your entire email address (e.g.,
  12. In the Password box, enter the password for your email account.
  13. If you want Outlook to check for email without prompting you to enter your password, check the Remember password box.
  14. Leave the Log on using Secure Password Authentication (SPA) box blank, and click the Next button.
  15. Click the Finish button.
  16. In the Internet Accounts window, select the email account that you just created, and click the Properties button.
  17. Click the Servers tab.
  18. The Log on using Secure Password Authentication box should not be checked.
  19. Check the My server requires authentication box.
  20. Click the Settings button.
  21. Be sure that the Use same settings as my incoming mail server button is selected.
  22. Click the OK button.
  23. Click the Advanced tab.
  24. Check the first This server requires a secure connection (SSL) box.
  25. In the Outgoing mail (SMTP) box, enter the secure outgoing port: 465.
  26. Check the second This server requires a secure connection (SSL) box.
  27. In the Incoming mail (IMAP) box, enter the secure incoming server port: 993

    Port numbers form
  28. Click the OK button.
  29. Click the Close button.
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