Gets the invalid envelope which could not parsed.
A reference to the Envelope object representing the FETCH response which could not be completely parsed.
Methods which download mail messages (such as DownloadEntireMessages) internally call DownloadEnvelopes to get envelopes, and then return mail messages by extracting them from MessagePreview property of the Envelope objects. Thus, MailBeeImapInvalidEnvelopeException can be thrown not only with DownloadEnvelopes methods, but also with the methods which download entire messages or message headers, including DownloadEntireMessage, DownloadMessageHeaders, etc.
MailBeeImapInvalidEnvelopeException Class | MailBee.ImapMail Namespace