Email Template Problem for Mobil

I can create an email template. however, this is displayed too small on the cell phone. you can hardly see the writing. even if I set it larger in the template. What can I do? Thanks for the help

Can you please tell us which version of SuiteCRM you are using?

We’ve checked from our End in SuiteCRM-7.12.x and SuiteCRM-7.10.x as you mentioned and it’s displayed properly as shown in the below screenshot.

Listview :

Editview :