Emails Not Being Received
Understand the Problem
Missing emails can have many causes — from DNS misconfiguration to full mailboxes to aggressive filtering. Let's narrow it down.
1
Who is affected?
2
Is the sender receiving a bounce or non-delivery report (NDR)?
3
Has the recipient checked their junk / spam folder?
4
When did the problem start?
5
What email platform is the recipient using?
6
Does the email arrive in webmail (Outlook on the web, Gmail in a browser)?
7
Has anything changed recently — DNS records, nameservers, email provider, or hosting?
8
Is there any indication the mailbox may be full or near its storage limit?
Answer all questions to continue to the Test stage.