When I try to fetch message from exchange I get ‘An invalid character was found in header value’. I see the problem raise when I try to get read receipt message with unicode char in display name, If display name is regular asci is OK. + For all other mails (not read receipt) is also OK.
Thank you for contacting Aspose support team.
I have tried to re-produce the issue here but am afraid that could not succeed. For further analysis, could you please share such a sample message with us, which can be used here to observe the issue? It will help us to provide assistance in this regard as soon as possible.