#compdef swaks

_arguments \
  '(-s --server -p --port)'{-s+,--server=}'[target host[:port\]]:host[\:port]:_hosts' \
  '(-p --port)'{-p+,--port=}'[target port number]:port number:(25 465 587)' \
  '--copy-routing[derive target host:port from email address domain part]:email address domain part' \
  '(-t --to)'{-t+,--to=}':envelope recipient(s):_sequence _email_addresses -c' \
  '(-f --from)'{-f+,--from=}':envelope sender:_email_addresses -c' \
  '(--ehlo --lhlo -h --helo)'{-h+,--ehlo,--helo,--lhlo}':HELO string:_hosts' \
  '(-q --quit-after)'{-q+,--quit-after=}'[stop transaction early]:stop point:((
      CONNECT\:banner BANNER\:banner
      FIRST-HELO\:first\ HELO FIRST-EHLO\:first\ HELO
      XCLIENT\:XCLIENT
      TLS\:TLS\ negotiation
      HELO\:second\ HELO EHLO\:second\ HELO
      AUTH\:authentication
      MAIL\:MAIL\ FROM FROM\:MAIL\ FROM
      RCPT\:RCPT\ TO TO\:RCPT\ TO
      ))' \
  '--protocol=:protocol variant:((
      SMTP\:HELO\ 25
      SSMTP\:EHLO\ 465
      SSMTPA\:EHLO\ 465\ authenticated
      SMTPS\:HELO\ 465
      ESMTP\:EHLO\ 25
      ESMTPA\:EHLO\ 25\ authenticated
      ESMTPS\:EHLO\ STARTTLS\ 25
      ESMTPSA\:EHLO\ STARTTLS\ 25\ authenticated
      ))' \
  '-tls[TLS required]' \
  '(-tlsos --tls-optional-strict)'{-tlsos,--tls-optional-strict}'[TLS iff offered by target]' \
  '(-tlsc --tls-on-connect)'{-tlsc,--tls-on-connect}'[TLS on connect (port 465)]' \
  '(-tlsp --tls-protocol)'{-tlsp,--tls-protocol=}':TLS protocol:(sslv2 sslv3 tlsv1 tlsv1_1 tlsv1_2)' \
  '-tls-cipher:OpenSSL cipher string: ' \
  '--tls-verify[verify TLS certificates]' \
  '--tls-ca-path=:OpenSSL CAfile or CAdir:_files' \
  '--tls-get-peer-cert=-:file to write (omit for STDOUT)' \
  '(-d --data)'{-d+,--data=}'[specify DATA payload]:filename (or string with tokens):_files' \
  '*'{-ah,--add-header=}'[add headers]:<Header>\: Value' \
  '*'{-h,--header=}'[replace headers]:<Header>\: Value'