Right Inbox is a message scheduler for Gmail. This browser extension lets you set a date for as many messages as you want. You’re actually given the option to send your messages at the day and time that you want, and since timezone support is provided you’ll never make the mistake of sending an important message in the middle of the night.
And in addition to letting you message others more easily, a service like Right Inbox is greatly practical for sending reminders to yourself. A bill that has to be paid, the birthday of your new boss… you can make sure you won’t ever forget any of these. Simply set a future email, and that’ll be the end of your worries.
Installing the Right Inbox plug-in is as easy as downloading it from the site (you can do it here), and let Right Inbox have access to your Gmail account.
Right Inbox is free until the service moves out of beta. Paid plans are going to be announced when that happens, but a free starter plan will always be provided, along with the chance to earn free credits for the plan you’re using.
RightInbox.com In Their Own Words
Schedule emails in Gmail to be sent later.
Some Questions About RightInbox.com
What will happen to this service when Gmail gives you an official way to have messages scheduled? 
