Online service for scheduling Email and SMS reminders
From the FAQ:
What is remindTRON all about?RemindTRON : Quick Email and SMS Reminders | MakeUseOf.com
RemindTRON is an extremely lightweight, easy to use reminder service. It is dedicated to reminding forgetful people about things they need to remember, but normally would forget, be it that this web application didn't exist. It's free for everyone to use, and unlike most useful tools, does not require you to sign up to use it. They say the best things in life are free. We prove it.
How do I use this tool?
It's simple. All you have to do to create a reminder for yourself is the following: type up a message for yourself (the reminder), enter your e-mail address, *optionally* enter your cell phone number if you'd like to receive a text message, and set the date you'd like to be reminded. Your reminder will then be added to our database, and when the time comes your reminder will be sent out.