I have recently had the experience that ?'s get inserted in emails as received, they are caused by non printing characters. This is new.
My emails as received have ?'s inserted -- this is new and seems to happen in places where there are non printing characters form cutting and pasting or backspaces. I don't really want to have to proof read my outgoing emails in such great detail. Is there some way to show the non printing characters before I send an email?
Chosen solution
Hello jonathanhodgson,
Would you try this please :
Go to the Configuration Editor (Tools, Options, Advanced, General, Config Editor).
Scroll down to mail.strictly_mime Click on it and change it from "false" to true.
That should do the trick ......
https://support.mozilla.org/en-US/kb/config-editor
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Chosen Solution
Hello jonathanhodgson,
Would you try this please :
Go to the Configuration Editor (Tools, Options, Advanced, General, Config Editor).
Scroll down to mail.strictly_mime Click on it and change it from "false" to true.
That should do the trick ......