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 10 hours ago  9
ZCO: Why am I getting Local Failure Notices? 12 hours ago  11
ZCO: Fix Persistent Local Failure Notices Outlook Stuck Syncing 12 hours ago  10
Zimbra Connector for Outlook (ZCO): Uninstall/Reinstall Process 12 hours ago  9
October 2025: Transition to Zimbra 10 3 days ago  1097
Creating a Persona in Zimbra webmail 4 days ago  44
Stop Zimbra from automatically adding calendar invites into calendar 5 days ago  61
Zimbra 10 Connector for Outlook (ZCO) Installation steps 5 days ago  69
Zimbra 8 Pro: Setting up Microsoft Outlook (Windows) with Zimbra 8 Connector for Outlook Synchronization (ZCO) 6 days ago  9368
Thunderbird IMAP: Shorten Sync Time 9 days ago  825
What's new in store with Zimbra 10? 16 days ago  138
Zimbra Webmail versions User's guides 20 days ago  253
Zimbra 10 User’s guide for Modern Web App 20 days ago  474
Warning: Possible inconvenience and account lock-out ahead! 21 days ago  273
Set up 2FA by email 21 days ago  234
Zimbra 2FA: Step 2: Generating application code for other devices / EMail Apps 21 days ago  7849
Zimbra 2FA: Step 3: Generating One Time Codes for emergency use 21 days ago  3542
Zimbra 2FA: Supported Authentication Applications 21 days ago  6100
Zimbra 2FA: Moving 2FA to a new authentication app on a new device 21 days ago  5197
Zimbra 2FA: How to enable and set-up 2-Factor Authentication for your HIS-Hosted Zimbra email account 21 days ago  5919
(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