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 (612)
    DNS, Domain Registration, Email, Mailing lists (Mailman), SPAM and Virus Email Filter, Web Site

  Support Portal (1)

All Articles

Title Updated Views
Zimbra 10 ZCO supported Windows and Outlook versions 2 days ago  21
ZCO: Why am I getting Local Failure Notices? 2 days ago  28
ZCO: Fix Persistent Local Failure Notices Outlook Stuck Syncing 2 days ago  25
Zimbra Connector for Outlook (ZCO): Uninstall/Reinstall Process 2 days ago  24
October 2025: Transition to Zimbra 10 5 days ago  1117
Creating a Persona in Zimbra webmail 5 days ago  51
Stop Zimbra from automatically adding calendar invites into calendar 7 days ago  70
Zimbra 10 Connector for Outlook (ZCO) Installation steps 7 days ago  83
Zimbra 8 Pro: Setting up Microsoft Outlook (Windows) with Zimbra 8 Connector for Outlook Synchronization (ZCO) 7 days ago  9389
Thunderbird IMAP: Shorten Sync Time 11 days ago  842
What's new in store with Zimbra 10? 17 days ago  145
Zimbra Webmail versions User's guides 22 days ago  266
Zimbra 10 User’s guide for Modern Web App 22 days ago  482
Warning: Possible inconvenience and account lock-out ahead! 22 days ago  291
Set up 2FA by email 22 days ago  248
Zimbra 2FA: Step 2: Generating application code for other devices / EMail Apps 22 days ago  7871
Zimbra 2FA: Step 3: Generating One Time Codes for emergency use 22 days ago  3556
Zimbra 2FA: Supported Authentication Applications 22 days ago  6114
Zimbra 2FA: Moving 2FA to a new authentication app on a new device 22 days ago  5215
Zimbra 2FA: How to enable and set-up 2-Factor Authentication for your HIS-Hosted Zimbra email account 22 days ago  5932
(Showing 1-20 of 395) 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