From David Jones, 10 Months ago, written in PHP.
  1. When using Outlook, many errors can pop up at any moment like Outlook not receiving emails. Let's have a look at what could have created the problem in the first place.
  2. There might be an issue with your computer's network connection.
  3. A system component (such as a firewall) may be preventing the emails from arriving.
  4. Instead of being retained in the main inbox, the emails might be sent to the spam folder.
  5. It's possible that your email account isn't correctly synchronized with Outlook.
  6. It's possible that Outlook's server is down or that the email client is inaccessible.

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