IMAP client library

https://github.com/crisward/imap

IMAP client library for Crystal

require "imap"

imap = Imap::Client.new(host: "imap.gmail.com", port: 993, username: "email@gmail.com", password: "*******")
mailboxes = imap.get_mailboxes
if mailboxes.size > 0
  mailbox = mailboxes[0]
  imap.set_mailbox(mailbox)
  message_count = imap.get_message_count
  puts "There are #{message_count} message in #{mailbox}"
end
imap.close