Yahoo! Calendars - Our top pick for an easy to use reminder service. True, as VA's we've got to remember dates, deadlines and times with ease, but when you've got something that doesn't need your immediate attention but you want to be reminded of it's importance a few weeks later, simply set up a reminder in the calendar with the relative details and set it to email the events right into your email inbox. Also great for setting recurring events like client birthdays and anniversaries!