Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Avatar for Username

Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

This thread was archived. Please ask a new question if you need help.

Email font displays so small it is unreadable

  • 3 replies
  • 2 have this problem
  • 91 views
  • Last reply by flame1.carol
  • Solved

flame1.carol
flame1.carol

Ever since the last update to version 102.3.3 a few days ago, the font in every email is displaying so small that it is unreadable. The font on the folder names, the list of email titles, and when composing an email are all fine - it is only the text in existing emails that is displaying this way, and it is all emails - even those that are years old.

In Settings under General, it shows my default font as Calibri 17. The About section says Thunderbird is up to date. I'm using a Windows 10 PC. Not sure what else you need to know.

Ever since the last update to version 102.3.3 a few days ago, the font in every email is displaying so small that it is unreadable. The font on the folder names, the list of email titles, and when composing an email are all fine - it is only the text in existing emails that is displaying this way, and it is all emails - even those that are years old. In Settings under General, it shows my default font as Calibri 17. The About section says Thunderbird is up to date. I'm using a Windows 10 PC. Not sure what else you need to know.
Attached screenshots

Chosen solution

Okay, well this is just bizarre. Apparently I hadn't closed Thunderbird since the update installed. I just closed and reopened the program and everything looks fine now. The email text is back to the correct size.

Thank you!

Read this answer in context 👍 1

All Replies (3)

david
david
  • Top 10 Contributor

Try using View>Fontsize. This can increase the message's font as viewed.

flame1.carol
flame1.carol Question owner

Thank you for the suggestion, David. Unfortunately, it doesn't increase it enough. It enlarges everything on the screen including the folder names and the email subjects, so those get too large to deal with and the print in the message itself is still too small to read.

Any other thoughts? Everything was fine until I installed version 102.

flame1.carol
flame1.carol Question owner

Chosen Solution

Okay, well this is just bizarre. Apparently I hadn't closed Thunderbird since the update installed. I just closed and reopened the program and everything looks fine now. The email text is back to the correct size.

Thank you!