Escape characters in messages

[Nicolas <e.conti@xxxxxxx>]

Hello,

I use mutt since 3-4 years. Sometimes, I receive messages which contain
escape characters. Here is what is looks like :
\222 is displayed while a ' should appear
\200 is displayed while a <insert euro sign here> should appear

That mess happens in the messages coming from the same people. One of
them use the following user agent :
User-Agent: Internet Messaging Program (IMP) 3.2.5
... which probably is a web mail.

What could I do to display the characters properly ?

Thanks for your help.

Nicolas, Paris.

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