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

Problems with setting the size of the letters in a satisfying way. (large enough)

  • 4 replies
  • 0 have this problem
  • 24 views
  • Paskiausią atsakymą parašė Wayne Mery

more options

I have been using Thunderbird for years. I loved it and there was never a problem. Until I updated to the latest version. My Operating system is Windows 10. The problem: It was impossible to set the size of the letters in a satisfying way. Only massive letters in writing emails resulted in a readable format on the receiving end. I tried one of the suggestions I found on the internet. Something like "set the same format initially and then again in Latin and the bottom choice of letter types". It did not work for me. So I decided to quit Thunderbird and start working with Gmail. Which is okay, but you have to be online and you have to change websites if you use more than one email address. I don't expect you to have a solution, but I want to inform you that I decided to quit after a years long good experience. Thank you for all your work and effort, Daniel van Schooneveld

I have been using Thunderbird for years. I loved it and there was never a problem. Until I updated to the latest version. My Operating system is Windows 10. The problem: It was impossible to set the size of the letters in a satisfying way. Only massive letters in writing emails resulted in a readable format on the receiving end. I tried one of the suggestions I found on the internet. Something like "set the same format initially and then again in Latin and the bottom choice of letter types". It did not work for me. So I decided to quit Thunderbird and start working with Gmail. Which is okay, but you have to be online and you have to change websites if you use more than one email address. I don't expect you to have a solution, but I want to inform you that I decided to quit after a years long good experience. Thank you for all your work and effort, Daniel van Schooneveld

Modified by Wayne Mery

All Replies (4)

more options

You are using version 115?

more options

Thank you for the question. I think so, but I don't have it anymore, because I uninstalled it. The update was no more than a month ago, and I think it was the latest at that moment.

more options

If you use 115 again then please post the following information because I keep seeing people with unbalanced settings and in particular the minimum setting being set much larger then the fixed and variable settings, so everything is out of balance and minmum is overriding everthing in mail content both received and what you compose.

In Thunderbird

-   Help > Troubleshooting Information
-   scroll down to 'Important Modified Preferences'
-   Copy all lines that start with 'font.' and paste info into this bug report.
more options

davan, you could help us even on version 102, by checking the following, because Toad-Hall was on the right track...


We have determined that some users somehow have a non-default value for hidden preferences ...

Check the Config Editor for this settings:

  • Settings > General
  • scroll to bottom and click on 'Config Editor' button

It opens in a new tab

  • In top search type: pixels
  • look for this line : layout.css.devPixelsPerPx
  • default is a negative number -1.0

It should not be in bold text, if bold text then it has been altered.

  • If you have anything else in that setting use the arrow icon on far right - click on it and the default is reset.

Another value to check is mail.uifontsize, what value do you see?

Please post your results