I assume that your using AVG Anti-Virus. A possibility is the ZA is blocking AVG from checking the incoming mail and so it isn't downloaded. Check the Programs in ZA and see if AVG is blocked, probably from server access.
Huawei P10 review
1995-2015: How technology has changed the world in 20 years
An overview: What leading creative agencies are doing to improve diversity
New iPad, iPhone SE & Red iPhone 7 on sale now
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.