Gmail Custom Time is the innovative new application that allows you to send email to the past. It’s just a shame it’s actually just an April Fools joke. Still, it looks quite convincing and I quite like the fact that it only allows you to send email back until April 2004, that’s the day Gmail was launched. The testimonials are quite amusing as well with one saying “I just got two tickets to Radiohead by being the ‘first’ to respond to a co-worker’s ‘first-come, first-serve’ email. Someone else had already won them, but I told everyone to check their inboxes again. Everyone sort of knows I used Custom Time on this one, but I’m denying it.” I wonder how many other April Fools jokes I have missed today.