HTML signatures are not supported at the moment. Please consider adding this feature.

Google Workspace Developers Q&A
1

Hi,

We are looking to create an HTML-based email signature using user details from the Google Workspace directory. However, the issue is that Google Workspace email signatures do not support HTML coding.

We also want to avoid relying on third-party marketplace solutions for this functionality.

For reference, Microsoft Exchange provides a feature called Mailflow, which allows the addition of HTML-coded footers for specific users and groups.

Is there a way to achieve similar functionality within Google Workspace?

Regards,
Talha Khan

2

You can do this with the free, open source, command-line, indispensable GAM tool. Check out:

for more details.

Specifically, see https://github.com/GAM-team/GAM/wiki/l-ExamplesEmailSettings#setting-a-signature

Hope that helps,

Ian

3

"Currently, HTML signatures are not supported, but you can set them up
using the GAM tool. It’s a free, open-source command-line tool that allows
you to manage email settings, including signatures.

4

Google Workspace doesn’t natively support dynamic HTML email signatures like Microsoft Exchange’s Mailflow. One workaround is using App Script to automate signature updates via the Admin SDK. Alternatively, third-party tools like Exclaimer or WiseStamp offer more flexibility, though they come at a cost.