I don't know why that change was made.

Some alternative approaches:

Use the extra format buttons addon which provides a numerical font size feature;

Use the Stationery addon where you can use your own css format declarations;

Use an HTML editor to adjust font sizing tags. Again, the Stationery addon has an html viewer/editor, or there is one at kaosmos's site.

I really appreciate your response, Zenos, but the problem is that I'm not very tech inclined. All this time, Thunderbird has been an app I could just go to and use. Now a major feature (for me) has been destroyed. The only answer is for the people who make all these changes to restore the ability to make the fonts much, much larger--for me, a minimum of 72 pt.

I have three friends who used to swear by Thunderbird, and now all four of us have to find another e-mail client. I've really loved Thunderbird. It's hard to leave.

I wrote to the Forum because I don't know how to contact whoever made these changes. I'm sure your suggestions would help someone more schooled in tech. Unfortunately, I'm not that guy. Thanks anyway.

Dave (RURCAPEK)

Adding an add-on doesn't take any real amount of techie skills.

You can download it here. Right-click, use "Save Link As".

And here is guidance on installing your downloaded file.

If you use Windows, you may be able to just drag my link onto Thunderbird's add-ons page.

Thanks for taking pity on an old guy, Zenos. The solution doesn't give me sizes above 72, but I can work with this. I see you're a top ten contributor. Your determination to help has saved me a gigantic headache. Really, really big thanks!