Right Inbox - Schedule Emails in Gmail To Be Sent Later
Twishort - Twishort is a best Twitter app for writing longer tweets. Tweet more than 140 characters
Recurrr - Send recurring emails
Privatter - Privatter is the easy way to share long texts and pictures set limit on your followers. You can post them by Sign in with Twitter account to this site.
FollowUpThen - The simplest way to schedule an email reminder
5Tweets.com - Type a long tweet and 5Tweets will rewrite it into multiple tweets with a tweet count.