How to make Zimbra Webmail default mailto client in Chrome and Firefox

Question

Hi,

I have a client which has migrated on Zimbra there is 1 month and use only the webmail (no mail client).

There is ~50 users and they use IE11/Firefox/Chrome.
They work on 2008R2 RDS server, a part of them (~ 5 users) work localy on Windows 10.

Local IT manager asks me if we can define Zimbra webmail as default mail client (I know that a webmail isn't an email client, it is a website...).
After discussions, we decided to define Zimbra webmail only on Firefox and Chrome.

So I look for a solution to set up Zimbra webmail as default mail client throught GPO (for mailto links among others).

I searched a solution on the web but I didn't find good solutions.

Have you an idea ? A solution ?

Thanks in advance.

Answer 1

I solved this by using ADMX for Chrome and Firefox; you can define mailto handler easly :

For Chrome : [{"url":"https://zimbra.contoso.com/?view=compose&to=%s","default": true,"protocol":"mailto"}]

For Firefox : {"schemes":{"mailto":{"action":"useHelperApp","ask":false,"handlers":[{"name":"zimbra.contoso.com","uriTemplate":"https://zimbra.contoso.com/?view=compose&to=%s"}]}}}

And create this reg key :

HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\MAILTO\UserChoice]
"Progid"="ChromeHTML"
or
HKCU\Software\Microsoft\Windows\Shell\Associations\UrlAssociations\MAILTO\UserChoice]
"Progid"="FirefoxURL"

Tested on 2008R2, 2019 Server Std with last Chrome and Firefox version and Firefox EST last version

Answer 2

Hello @Cédric ,

Thank you for posting here.

I am sorry, because Zimbra webmail is a third-part product, based on my knowledge, there is no such GPO settings in Windows AD group policy management.

You can try the solution you searched on the web.

Or you can try to set up Zimbra webmail as default mail client on one machine manually to see if it helps.

Hope the information above is helpful to you.

Should you have any question or concern, please feel free to let us know.

Best Regards,
Daisy Zhou

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