Email text is sometimes too small to read if the message has been sent as HTML. However, if the message also contains a hidden Plain Text Alternative, you can switch to that by pressing
[cmd] + [alt] + [P]
Now the message will be displayed in the typeface and character size that you have set as your default.
(If it doesn't work then the message doesn't contain a plain text alternative. Press [cmd] + [ + ] instead.)
Is there a similar trick for Windows mail software?
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