We send out digests of group messages to many of our users. In some mobile email clients, the font size will automatically be increased, so that the digest is readable, which is what we want, but in other email clients, this won't happen, and the user will be stuck trying to read tiny letters. Specifically, it seems to work ok in the Gmail app, but not in the iOS app or the Yahoo app.

We'd we happy to pay someone to review and fix an example message, so that it formats correctly on the major email apps (ie the font size isn't too small). It doesn't look like this forum supports direct messages, so you can contact me directly at markf (at) corp.groups.io