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 1 day ago  16
ZCO: Why am I getting Local Failure Notices? 1 day ago  21
ZCO: Fix Persistent Local Failure Notices Outlook Stuck Syncing 1 day ago  19
Zimbra Connector for Outlook (ZCO): Uninstall/Reinstall Process 2 days ago  19
October 2025: Transition to Zimbra 10 4 days ago  1114
Creating a Persona in Zimbra webmail 4 days ago  50
Stop Zimbra from automatically adding calendar invites into calendar 6 days ago  68
Zimbra 10 Connector for Outlook (ZCO) Installation steps 6 days ago  80
Zimbra 8 Pro: Setting up Microsoft Outlook (Windows) with Zimbra 8 Connector for Outlook Synchronization (ZCO) 6 days ago  9382
Thunderbird IMAP: Shorten Sync Time 10 days ago  838
What's new in store with Zimbra 10? 17 days ago  144
Zimbra Webmail versions User's guides 21 days ago  263
Zimbra 10 User’s guide for Modern Web App 21 days ago  480
Warning: Possible inconvenience and account lock-out ahead! 22 days ago  286
Set up 2FA by email 22 days ago  244
Zimbra 2FA: Step 2: Generating application code for other devices / EMail Apps 22 days ago  7868
Zimbra 2FA: Step 3: Generating One Time Codes for emergency use 22 days ago  3552
Zimbra 2FA: Supported Authentication Applications 22 days ago  6110
Zimbra 2FA: Moving 2FA to a new authentication app on a new device 22 days ago  5210
Zimbra 2FA: How to enable and set-up 2-Factor Authentication for your HIS-Hosted Zimbra email account 22 days ago  5928
(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