If apps and clients are not really your thing, or you want to be able to schedule tweets from absolutely anywhere Dopo.io could be the solution for you. Schedule up to 15 tweets through a simple email. All you have to do is connect your Twitter account, set up to 4 times a day to send your tweets, and get your unique email address.
To schedule (full hours only: i.e., 9:00,13:00, 22:00) a new tweet, email your unique address, write “buffer” in your subject line, and write your tweet in the email body. It will automatically be scheduled for the next available time slot. You can schedule several tweets in one email by separating them with an empty line. If you change your mind, you can log on to Dopo.io and erase your tweets. You cannot re-order your Tweets once it is scheduled. One drawback, Dopo.io doesn’t have a built-in URL shortener.