RMail for Zimbra

RMail for Zimbra

Zimbra server operators may install the RMail Zimlet for more email security, compliance, and productivity services. RMail for Zimbra adds a one-click button in the normal compose message workflow of email users. RMail adds email encryption, e-signatures, Registered Email™ certified e-delivery proof, email open tracking, secure large file transfer, and more.

RMail adds so many business essentials to the Zimbra email interface. We worked closely with Synacor and RPost to build RMail into Zimbra with all of the features enabled in a simple, elegant user experience; and importantly, with a process that makes it easy for any Zimbra BSP, VAR, or corporate server administrator to deploy.”
– Barry de Graaff, Zeta Alliance Co-founder & Zimbra Developer 

Product Tour

How to Install

The RMail for Zimbra installation software is maintained in the Zeta Alliance Zimbra Community GitHub. This must be installed on the Zimbra server by a Zimbra admin (and not by an end user).

Getting Started

Customer Stories

App Info


v8 (Zimbra version)

Languages Supported:

App Language: English. Additional languages may be available upon request.

Service Language (Messages, Receipts, etc.): Danish, Dutch, English, French, German, Italian, Latvian, Lithuanian, Polish, Portuguese, Spanish.

Minimum Requirements:

Operating SystemAny
Browser VersionLatest
DeploymentAdmin installs on Zimbra server and enables for a single user, user group, or company-wide deployment
UpdatesManual updates
RequirementsZimbra server version 8
LicensingFree base RMail service plan. Per user, shared group of users, or usage based for premium for RMail service
“Send Registered” Button locationBuilt into the Zimbra compose email pane in the upper left.