Imports github.com/emersion/go-message github.com/emersion/go-message/mail github.com/emersion/go-imap github.com/emersion/go-imap/client github.com/wneessen/go-mail github.com/wneessen/go-mail/smtp Standard library imports bytes context crypto/tls errors fmt io math mime net net/mail net/textproto os path/filepath sort strings sync sync/atomic time math/rand/v2