On 2020-10-22 18:24, John Rouillard wrote:
> Hi =?utf-8?q?C=C3=A9dric_Krier?=: (hope the encoding works correcly.)
> 
> In message <1603384621.38.0.248728051864.issue2551092@roundup.psfhosted.org>,
> =?utf-8?q?C=C3=A9dric_Krier?= writes:
> >I do not have anymore the email that was breaking it.
> >But from memory it was a subject with some non-ascii char  like "é".
> 
> Do you remember if it was a literal utf-8 character or an encoded
> entity in the subject.

I do not remember but I know it was sent via mutt (like this email).