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MailThreatZero for everyone: held mail, warnings and suspicious messages

For everyone whose email is protected by MailThreatZero: what it does to mail before it reaches you, how to read a quarantine notification and use its release link safely, why some messages can only be released by IT, what warning banners and checked links look like, why QR codes in email deserve extra care, what to do when an expected message is missing or your mail server is down, and how to report a suspicious message.

Level
Beginner
Length
About 30 minutes
Contents
3 lessons · 1 video · final exam
Status
Published · updated 2 Oct 2026
  • MailThreatZero

Skills you'll practise

  • Read a quarantine notification and decide which held messages are safe to release
  • Explain what a release link can and cannot do and why serious threats need IT
  • Recognize a fake 'quarantine' message that asks for a password
  • Handle a missing expected email by checking your notification and then asking IT
  • Report a suspicious message through your organization's route instead of acting on it

Course outline

  1. 1.MailThreatZero for everyone: held mail, warnings and suspicious messagesVideo · 1 min
  2. 2.What happens to your mail firstLesson · 10 min
  3. 3.Using a quarantine notificationLesson · 10 min
  4. 4.Missing mail, outages and reportingLesson · 10 min
  5. 5.MailThreatZero for everyone: held mail, warnings and suspicious messages: knowledge checkKnowledge check · 15 questions
  6. 6.Final exam10 questions · passing it completes the course, so people who already know the material can test out

Sources it draws on

The lessons and questions are written from these references, so learners can go back to the original.

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