Sunday, February 17, 2008

Mail Fetcher - Fetch Email from Ruby and Rails

I recently had to write something to fetch emails from a GMail account and process the emails to check if the email was a bounce (bad email address). If so, the person in the system associated with the bounced email would be deleted from the database. I did some searching for such thing and found this:

How to receive emails with Rails

About half way down the page you see an example for polling emails from a POP3 server (edited for space):

require 'net/pop'
require File.dirname(__FILE__) + '/../config/environment'

logger = RAILS_DEFAULT_LOGGER "Running Mail Importer..."
Net::POP3.start("", nil, "username", "password") do |pop|
if pop.mails.empty? "NO MAIL"
pop.mails.each do |email|

begin "receiving mail..."
rescue Exception => e
logger.error e.message

end "Finished Mail Importer."

So try this with a GMail server and you get no connection. Why? Because Google uses SSL when logging in via POP3. So the I looked around and found someone using SSL to login via POP3. All they did was add this line right before trying to start the connection: Net::POP3.enable_ssl(OpenSSL::SSL::VERIFY_NONE)

Simple enough. I went ahead and tried that, and it blows up with the following error: undefined method `enable_ssl' for Net::POP3:Class. Now trying to find out why this didn't work was annoying, but I finally found out that in the current version of Ruby (1.8.6), Net::POP3 doesn't understand enable_ssl. The edge version, however, does. So, I got the net/pop.rb file and required it instead of the 1.8.6 version and voila! It works! So, instead of just posting this and letting everyone know that you have to do this to make SSL POP3 access work, I made a plugin:

Mail Fetcher

Now the whole world may enjoy SSL POP3 access to their hearts' content. And, it also works with IMAP. Checkout the README and mail_fetcher.rb to get all the details. Enjoy!


Zendesk said...
This comment has been removed by the author.
Anonymous said...

This is what we use:

It reads a mail.yml file in which you can put ssl: true

Anonymous said...

Thanks that was really useful. Keep up the excellent work

Josh Lippiner said...

Ok - This is a great plugin, however, for some reason the POP delete does not seem to be working.

While it appears to delete it (somehow) in the sense that if I try to fetch again from Google it wont, when I log into Google the message is still there?

Any thoughts?

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Have you considered the fact that this might work another way? I am wondering if anyone else has come across something
like this in the past? Let me know your thoughts...

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