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 4 days ago  29
ZCO: Why am I getting Local Failure Notices? 4 days ago  34
ZCO: Fix Persistent Local Failure Notices Outlook Stuck Syncing 4 days ago  34
Zimbra Connector for Outlook (ZCO): Uninstall/Reinstall Process 4 days ago  31
October 2025: Transition to Zimbra 10 7 days ago  1147
Creating a Persona in Zimbra webmail 7 days ago  64
Stop Zimbra from automatically adding calendar invites into calendar 9 days ago  82
Zimbra 10 Connector for Outlook (ZCO) Installation steps 9 days ago  97
Zimbra 8 Pro: Setting up Microsoft Outlook (Windows) with Zimbra 8 Connector for Outlook Synchronization (ZCO) 9 days ago  9422
Thunderbird IMAP: Shorten Sync Time 13 days ago  868
What's new in store with Zimbra 10? 20 days ago  152
Zimbra Webmail versions User's guides 24 days ago  287
Zimbra 10 User’s guide for Modern Web App 24 days ago  498
Warning: Possible inconvenience and account lock-out ahead! 24 days ago  310
Set up 2FA by email 24 days ago  266
Zimbra 2FA: Step 2: Generating application code for other devices / EMail Apps 24 days ago  7897
Zimbra 2FA: Step 3: Generating One Time Codes for emergency use 24 days ago  3578
Zimbra 2FA: Supported Authentication Applications 24 days ago  6138
Zimbra 2FA: Moving 2FA to a new authentication app on a new device 24 days ago  5243
Zimbra 2FA: How to enable and set-up 2-Factor Authentication for your HIS-Hosted Zimbra email account 24 days ago  5956
(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