Receiving emails

[Standsec]

Since last Friday, I know of emails from 2 regular contacts that have not arrived. They do not appear in my Inbox or in my Spam folder. Other emails are arriving as normal. It is the same situation both in Outlook on my laptop and gmail on my smartphone. Any ideas?

[Ady-TalkTalk]

Hi Standsec, I've run a 7 day scan on your registered email and there's nothing showing deferred or blocked. Please send me a personal message with the sender email address and I'll check them. 

Ady

[trickybottom]

I am having the same issue with 1 of my regular contacts