Unable to parse signed email

signed-messages.zip There are particular emails where MsgReader unable to parse. See attached both sample emails, one is parse-able and second is not.

Note: Both messages are signed by same sender from Thunderbird and we are parsing inside an Outlook VSTO addin

I have used particular code snippet to parse message

string emailPath = @"C:\signed-by-ms-admin-valid.msg"; MsgReader.Mime.Message mailMessage = new MsgReader.Mime.Message(File.ReadAllBytes(emailPath), true);

See attached sample messages

1. signed-by-ms-admin-valid.msg is parsing correctly. Above code extracting signer’s certificate under SignedCertificate attribute
2. signed-by-ms-admin-tampered.msg is failed to parse by above code snippet.

Expected behavior Ideally both kind of messages should be parsed.

Desktop (please complete the following information):

• OS: Windows 10, 11
• Outlook 2019, O365, 2021

[Sicos1977]

I changed something in the latest nuget package so that the signed information is also reflected to the message object

[Sicos1977]

I tried both you messages but can open them without any problems