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Editorial Team
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Asked: 2026-06-14T23:22:28+00:00

Question about InboundMailHandler. class MailHandle(InboundMailHandler): def receive(self, mail_message): mail_message.sender may contained John Bolton <john78@mail.com>.

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Question about InboundMailHandler.

class MailHandle(InboundMailHandler):
  def receive(self, mail_message):

mail_message.sender may contained "John Bolton <john78@mail.com>". How can i extract "john78@mail.com" from it?
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1 Answer

  1. Editorial Team

    I’ve been using this regex, which works very well. It might theoretically be possible to engineer a sender which fails this regex, that’s why I catch the exception and alert about the address. It has not happened yet though.

    try:
    sender = re.search('<?([^<>]+)>?$',mail.sender).group(1)
except AttributeError:
    ...

    The other answer is not compatible with the official email address format, as defined per RFC 2822.

    Normally, a mailbox is comprised of two parts: (1) an optional display
    name that indicates the name of the recipient (which could be a person
    or a system) that could be displayed to the user of a mail
    application, and (2) an addr-spec address enclosed in angle brackets
    ("<" and ">"). There is also an alternate simple form of a mailbox
    where the addr-spec address appears alone, without the recipient’s
    name or the angle brackets.

    Please note that this snippet mentions recipients, but if you read the spec, it applies to senders also.

    https://www.rfc-editor.org/rfc/rfc2822#section-3.4

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