- SASL Authentication
- Include code to fetch an OAuth2 token?
- ANONYMOUS
- GSSAPI
- SMTP Client
- CHUNKING (hmmm, doesn't really seem all that useful...)
- Throw an exception if the MimeMessage is larger than the SIZE value?
- POP3 Client
- Rename Pop3Client.DeleteMessage() to Pop3Client.Delete()? Less verbose...
- IMAP4 Client
- Extensions:
- ACL
- BINARY
- CATENATE
- LIST-EXTENDED (Note: partially implemented already for getting the special folders)
- CONVERT (Note: none of the mainstream IMAP servers seem to support this)
- ANNOTATE
- METADATA
- NOTIFY (Note: only Dovecot seems to support this)
- FILTERS (Note: none of the mainstream IMAP servers seem to support this)
- LIST-STATUS (Note: only Dovecot seems to support this)
- CREATE-SPECIAL-USE (Note: not widely supported)
- MULTISEARCH (Note: none of the mainstream IMAP servers seem to support this)
- Extensions:
- Maildir
- Thunderbird mbox folder trees