Having trouble reading the text/html message part

Question

I\'m trying to pull out the subject and body of an email with .Net. It seems to go OK except for the text/html MessagePart. I\'m not sure of the encoding etc - has anybody

Answer 1

The body data appears to be base64url-encoded, not base64-encoded. The difference is the use of - and _, instead of + and /, in the encoding’s alphabet of 64 characters. One solution is to replace all - and _ characters with + and / respectively, before calling FromBase64String.

See http://tools.ietf.org/html/rfc4648#section-5