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 6 days ago  47
ZCO: Why am I getting Local Failure Notices? 6 days ago  52
ZCO: Fix Persistent Local Failure Notices Outlook Stuck Syncing 6 days ago  51
Zimbra Connector for Outlook (ZCO): Uninstall/Reinstall Process 6 days ago  45
October 2025: Transition to Zimbra 10 9 days ago  1178
Creating a Persona in Zimbra webmail 9 days ago  77
Stop Zimbra from automatically adding calendar invites into calendar 11 days ago  91
Zimbra 10 Connector for Outlook (ZCO) Installation steps 11 days ago  107
Zimbra 8 Pro: Setting up Microsoft Outlook (Windows) with Zimbra 8 Connector for Outlook Synchronization (ZCO) 11 days ago  9451
Thunderbird IMAP: Shorten Sync Time 15 days ago  905
What's new in store with Zimbra 10? 22 days ago  166
Zimbra Webmail versions User's guides 26 days ago  305
Zimbra 10 User’s guide for Modern Web App 26 days ago  528
Warning: Possible inconvenience and account lock-out ahead! 26 days ago  326
Set up 2FA by email 26 days ago  283
Zimbra 2FA: Step 2: Generating application code for other devices / EMail Apps 26 days ago  7925
Zimbra 2FA: Step 3: Generating One Time Codes for emergency use 26 days ago  3599
Zimbra 2FA: Supported Authentication Applications 26 days ago  6161
Zimbra 2FA: Moving 2FA to a new authentication app on a new device 26 days ago  5264
Zimbra 2FA: How to enable and set-up 2-Factor Authentication for your HIS-Hosted Zimbra email account 26 days ago  5976
(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