#313 Receiving Email with Mailman pro

Jan 02, 2012 | 11 minutes | Tools

The Mailman gem makes it easy to receive email in a Rails application. Here I show how to write a script to run Mailman in its own process and pull down mail from a POP3 account.

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          terminal
        
chmod +x script/mailman_server
cat mailman_test.eml | script/mailman_server
script/mailman_server

          Gemfile
        
gem 'mailman', require: false

          ruby
        
# script/mailman_server
#!/usr/bin/env ruby
require "rubygems"
require "bundler/setup"
require "mailman"

Mailman.config.logger = Logger.new("log/mailman.log")

Mailman.config.pop3 = {
  server: 'pop.gmail.com', port: 995, ssl: true,
  username: ENV["GMAIL_USERNAME"],
  password: ENV["GMAIL_PASSWORD"]
}

Mailman::Application.run do
  default do
    begin
      Ticket.receive_mail(message)
    rescue Exception => e
      Mailman.logger.error "Exception occurred while receiving message:\n#{message}"
      Mailman.logger.error [e, *e.backtrace].join("\n")
    end
  end
end

          models/ticket.rb
        
def self.receive_mail(message)
  ticket_id = message.subject[/^Update (\d+)$/, 1]
  if ticket_id.present? && Ticket.exists?(ticket_id)
    Ticket.update(ticket_id, body: message.body.decoded)
  else
    Ticket.create subject: message.subject, body: message.body.decoded, from: message.from.first
  end
end