BT may have identified your ISP as a source of spam. This isn't a new problem - several people I know have encountered the same thing. Do you have (or could you obtain) an alternative email address - maybe that's the way around the problem?
What is ransomware and how do I protect my PC from WannaCry?
What I learned from my mentor, Oscar-winning VFX supervisor Phil Tippett
Siri vs Google Assistant
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.