Knowledge Base

We are not offering 24/7 telephone support at this time, please open a Support Ticket

  • knowledgebase
  • announcements
Search

Most Popular
Recently Added
Recently Updated
Topics
  Billing (8)

  Support (608)
    DNS, Domain Registration, Email, Mailing lists (Mailman), SPAM and Virus Email Filter, Web Site

  Support Portal (1)

All Articles

Title Updated Views
Stop Zimbra from automatically adding calendar invites into calendar 18 hours ago  12
Zimbra 10 Connector for Outlook (ZCO) Installation steps 19 hours ago  17
October 2025: Transition to Zimbra 10 19 hours ago  979
Zimbra 8 Pro: Setting up Microsoft Outlook (Windows) with Zimbra 8 Connector for Outlook Synchronization (ZCO) 19 hours ago  9287
Thunderbird IMAP: Shorten Sync Time 5 days ago  743
What's new in store with Zimbra 10? 11 days ago  105
Zimbra Webmail versions User's guides 16 days ago  205
Zimbra 10 User’s guide for Modern Web App 16 days ago  417
Warning: Possible inconvenience and account lock-out ahead! 16 days ago  208
Set up 2FA by email 16 days ago  182
Zimbra 2FA: Step 2: Generating application code for other devices / EMail Apps 16 days ago  7758
Zimbra 2FA: Step 3: Generating One Time Codes for emergency use 16 days ago  3479
Zimbra 2FA: Supported Authentication Applications 16 days ago  6029
Zimbra 2FA: Moving 2FA to a new authentication app on a new device 16 days ago  5131
Zimbra 2FA: How to enable and set-up 2-Factor Authentication for your HIS-Hosted Zimbra email account 16 days ago  5847
Zimbra 2FA: Step 1: Secure HIS Zimbra Webmail login 16 days ago  2902
Password requirements for email accounts 22 days ago  3434
Changing @his.com Email Account Password Using A Temporary Password 22 days ago  7429
Changing Zimbra - @his.com Email Account Password Knowing The Current One 22 days ago  2719
Setting up Android Phone to connect to Zimbra (IMAP) 26 days ago  3941
(Showing 1-20 of 391) Next> >>

For news and system status updates, check: status.his.com

Check our Knowledge Base for How-To tips and answers to common questions.

We are not offering 24/7 telephone support at this time, please open a Support Ticket