My father has macular degeneration, and currently uses Comcast Webmail for all his email. In Comcast webmail, I am able to set up a default font of 24 point so that he can read what he's typing, but unfortunately incoming email is displayed only in the font that the sender chose when they created the email. He can use Ctrl+ to zoom, but then the email extends off the monitor and he has to scroll left/right to read it. He usually ends up reading it with a magnifying glass, one letter at a time. Painfully slow. So I am looking for an email program to use on his computer (not webmail) one that we can set up default fonts for incoming messages, so the type will be large enough for him to read without the magnifying glass and without using Ctrl+ to zoom. Can we do that with Thunderbird? I have not downloaded the program. I don't want to start setting it up if it can't set font size for incoming messages.