On 2021/04/14 12:32, Marco Calistri wrote:

Hello,

Somebody could tell me if I have any chance to adjust Inbox messages characters size whose source contains:

Content-Type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 7bit
 

---
  Many times there is a separate font used for the cases you
mention, they are usually configurable under Options+Display then
fonts -- where that can allow you to choose fonts/encoding.



  Also if you know how to get into the about:config option in
Tbird, and look for the
value of "layout.css.devPixelsPerPx", (I see it as a string value),
then changing that value from the default of -1 (or 1) to values like
1.1 or 1.2 should give about a 10 or 20% size increase across your
entire UI.

-- 
Marco Calistri
Build: openSUSE Tumbleweed 20210408 
Kernel:5.11.11-1-default
Desktop: XFCE (4.16.0)