
After you have signed up all you need to do is to do the following:
Simple, you just need to format the subject line correctly e.g. if you wanted to send an email to "johnny@dev.null" with a subject line of "yo dude" then your sendlater email subject line would be "jonny@dev.null yo dude" - not complex eh?
Sure sure, it's just a default. If you want to specify a different time delay simply enter this at the start of the subject line. Following on from the previous example, if you wanted to send your email to johnny in two hours then your subject line would be "2h jonny@dev.null yo dude" (2h = 2 hours), if you wanted to send the email in a day's time the subject line would be "1d jonny@dev.null yo dude".