Every now and then you hear stories about letters or postcards which arrive years after being posted. The modern version is the email which arrives months or years after being sent.

This evening I was checking my email when I received 30 new messages but none were visible in my inbox. I changed the view to show unread rather than recent messages. The messages were all dated between July and December last year. A lot were adverts or updates from websites but one was from a work colleague from several jobs ago. So sorry, Andy, I wasn't ignoring your email which you sent in July. It took nearly 7 months to get here for some reason.