ZacharyZhang-NYandClaude Opus 5.5
9f47b94714
TLS or STARTTLS with the system trust store; password and XOAUTH2 logins keep the server's words on refusal. IMAP and POP3 are written in the engine (imap-proto parses IMAP replies): async-imap dropped NO/BAD on LIST and FETCH and lost BYE text, async-pop kept dot stuffing and logged passwords. SMTP runs its own transaction with RFC 5321 mailbox checks, full dot transparency, SMTPUTF8 and RSET. Co-Authored-By: Claude Opus 5.5 (1M context) <noreply@anthropic.com>