Hi, Maxime Devos writes: > Or is text;charset=utf-8 actually valid? There is a clear answer from RFC 2045, Section 5.1 [1]: > Note also that a subtype specification is MANDATORY -- it may not be > omitted from a Content-Type header field. 1: https://datatracker.ietf.org/doc/html/rfc2045#section-5.1 Best -- Daniel