How to detach mail attachments with Net::IMAP

Since documenattion on this topic is very “non existing” I thought I
would share this with you:


require ‘net/imap’

imap = Net::IMAP.new(‘my.mail.server’)
imap.login(‘usr’, ‘pwd’)
imap.select(‘Inbox’)

All msgs in a folder

msgs = imap.search([“SINCE”, “1-Jan-1969”])

Read each message

msgs.each do |msgID|
msg = imap.fetch(msgID, [“ENVELOPE”,“UID”,“BODY”] )[0]

Only those with ‘SOMETEXT’ in subject are of our interest

if msg.attr[“ENVELOPE”].subject.index(‘SOMETEXT’) != nil
body = msg.attr[“BODY”]
i = 1
while body.parts[i] != nil

additional attachments attributes

  cType = body.parts[i].media_type
  cName = body.parts[i].param['NAME']
  i+=1

fetch attachment.

  attachment = imap.fetch(msgID, "BODY[#{i}]")[0].attr["BODY[#{i}]"]

Save message, BASE64 decoded

  File.new(cName,'wb+').write(attachment.unpack('m'))
end

end
end
imap.close

by
TheR

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