I have been blocking spam emails from a dating company, they keep coming through with different ladies names saying Hello. I got one with a mans name saying the same thing so I blocked it without looking as I didn't recognise the sender. Yesterday mrsP asked if I had deleted mails from a Mark as her friend from work was sending mails from her brothers computor, likely story, but there. How do I unblock that particular sender? I have looked but cannot find the way.