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 21 hours ago  12
ZCO: Why am I getting Local Failure Notices? 23 hours ago  16
ZCO: Fix Persistent Local Failure Notices Outlook Stuck Syncing 23 hours ago  15
Zimbra Connector for Outlook (ZCO): Uninstall/Reinstall Process 23 hours ago  13
October 2025: Transition to Zimbra 10 4 days ago  1105
Creating a Persona in Zimbra webmail 4 days ago  46
Stop Zimbra from automatically adding calendar invites into calendar 6 days ago  64
Zimbra 10 Connector for Outlook (ZCO) Installation steps 6 days ago  77
Zimbra 8 Pro: Setting up Microsoft Outlook (Windows) with Zimbra 8 Connector for Outlook Synchronization (ZCO) 6 days ago  9376
Thunderbird IMAP: Shorten Sync Time 10 days ago  828
What's new in store with Zimbra 10? 17 days ago  140
Zimbra Webmail versions User's guides 21 days ago  257
Zimbra 10 User’s guide for Modern Web App 21 days ago  477
Warning: Possible inconvenience and account lock-out ahead! 21 days ago  279
Set up 2FA by email 21 days ago  237
Zimbra 2FA: Step 2: Generating application code for other devices / EMail Apps 21 days ago  7857
Zimbra 2FA: Step 3: Generating One Time Codes for emergency use 21 days ago  3546
Zimbra 2FA: Supported Authentication Applications 21 days ago  6104
Zimbra 2FA: Moving 2FA to a new authentication app on a new device 21 days ago  5201
Zimbra 2FA: How to enable and set-up 2-Factor Authentication for your HIS-Hosted Zimbra email account 21 days ago  5922
(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