Email is arguably the most important communications channel in the world. With a near-global adoption (basically, anywhere there's internet there's email!), it has long since been a favourite of marketers looking to drive conversions and brand awareness.

It's difficult to recall a time when email wasn't simply a common part of everyday life. But you may be surprised to learn that it predates the internet, with roots going all the way back to the 1960s.

There have been quite a few developments along the way, however!