You can invent a bicycle and spend a considerable amount of time by signing in for everything. But the disadvantages of this are obvious: the limited possibilities of searching letters inside the box, the inconvenience of displaying emails, the inability to see statistics by companies and industries, the lack of analytical tools. In addition, in due course from the letters in the mailbox some of the pictures disappear due to their removal on the servers. By the way, the mailbox has size limitation. And additionally, you will have access to letters only from the moment of subscription, early mailing letters are not available to you.