Licensing and mailbox types
Know which Microsoft 365 plans include what, which mailbox types need a license, and how to avoid paying for the wrong thing.
- Level
- Beginner
- Length
- About 40 minutes
- Contents
- 3 lessons · 1 video · final exam
- Status
- Published · updated 2 Oct 2026
- Microsoft 365
Skills you'll practise
- Distinguish user, shared, room and equipment mailboxes and say which need a license.
- Identify when a shared mailbox needs a license (size, archive or hold).
- Match common business plans to what they include at a high level.
- Explain what happens to mailbox data when a license is removed or a user is deleted.
Course outline
- 1.Licensing and mailbox typesVideo · 4 min
- 2.Mailbox types and when they need a licenseLesson · 8 min
- 3.Plans and what they includeLesson · 8 min
- 4.What happens to data when licenses changeLesson · 8 min
- 5.Licensing and mailbox types: knowledge checkKnowledge check · 14 questions
- 6.Final exam8 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.
- Microsoft Learn: About shared mailboxes
- Microsoft Learn: Exchange Online limits
- Microsoft Learn: Microsoft 365 for business subscription service descriptions
- Microsoft Learn: Room and equipment mailboxes
- Microsoft Learn: Remove a former employee and secure data
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