There are many reasons for wanting to be able to delete an email without opening it; for example, you may suspect that it contains malware and don’t want to have spyware installed on your computer. But one of the most common reasons that someone would want to know how to delete email without opening it or “reading” it on a Mac is because you don’t want whomever sent it to you to know that you opened it or read it.

For a few brief, shining hours, countless Iranian citizens had unfettered access to Facebook and Twitter. Due to what Iranian authorities are calling a “technical glitch”, the ordinarily locked down Internet – which some call the Iranian “filternet” – had Facebook and Twitter shaped holes punched in it.