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Extracting a list of email addresses from a mail header

by nate (Monk)
on May 15, 2000 at 19:55 UTC ( #11664=perlquestion: print w/ replies, xml ) Need Help??
nate has asked for the wisdom of the Perl Monks concerning the following question:

Is there a function in one of the assorted CPAN mail modules that can return all of the email addresses from a mail header in a list? I need to be able to find all the addresses an email is being sent to.

Comment on Extracting a list of email addresses from a mail header
Re: Extracting a list of email addresses from a mail header
by ZZamboni (Curate) on May 15, 2000 at 20:13 UTC
    Take a look at the MailTools package from Graham Barr. In particular, Mail::Internet, Mail::Header and Mail::Address may be what you are looking for. Also, doing a search for Mail:: on CPAN yields some results that may be interesting.

    --ZZamboni

Re: Extracting a list of email addresses from a mail header
by kryten (Scribe) on May 15, 2000 at 20:17 UTC
    You could try Mail::Header which is part of MailTools (but does not seem to show up on its own though :/) Which lets you maniplate the headers with relative ease. Although I do not think it has a function to return all the email addresses you could look through the relevant header fields and grab the addresses from there..

    Update: It would appear that ZZamboni types faster than I do.

Re: Extracting a list of email addresses from a mail header
by nate (Monk) on May 15, 2000 at 21:52 UTC
    Thanks for the pointers -- I finally got it, but it's a little messy:
    use Mail::Internet; use Mail::Address; my @mail; while(<>) { push @mail, $_; } #read mail from STDIN and put it in @MAIL my $EMAIL = new Mail::Internet([@mail]); my $header = $EMAIL->head(); my @hlines; push @hlines, $header->get('To'); push @hlines, $header->get('Cc'); push @hlines, $header->get('Bcc'); #thanks [ZZamboni]... my @addr; foreach (@hlines) { my $line = $_; $line =~ s/^\w+\:(.*)$/$1/gs; #this is necessary to cut off the initial "To:" from the #header line -- I'm not sure why Address::Parse doesn't #do this push (@addr, Mail::Address->parse($line)); } #we now have a list of address objects -- convert to text addresses foreach (@addr) { $_ = $_->address } #our addresses are now in @addr
    if anyone has any suggestions to tidy this up, please post. Esp. clipping the "To:", "cc:", and "bcc:" seems like it shouldn't need to be there -- but this worked on my test emails.
      I think you are bypassing the documented interface of Mail::Header by accessing its internal data like that (mail_hdr_hash). The following gives you the headers with the keyword removed:
      push @hlines, $header->get('To'); push @hlines, $header->get('Cc'); push @hlines, $header->get('Bcc');
      According to the Mail::Header documentation, get() in array context returns "a list of all the text from all the instances of TAG". Which should be what you are looking for.

      --ZZamboni

Re: Extracting a list of email addresses from a mail header
by Dominus (Parson) on Nov 27, 2000 at 00:03 UTC
    Use the CPAN Email::Find module for that.

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