7. How to Configure Litigation Hold and Email Archiving in Exchange Online (Video in Khmer)

Hello my friend! 🗄️ Sometime company need keep email for long time — for law, for audit, or just because mailbox is full. Today we learn 2 important feature in Exchange Online: Litigation Hold and Archive Mailbox.

What You Will Learn

✅ Put mailbox on Litigation Hold, so no email can be lost
✅ Turn on Archive Mailbox, so user get more space for old email

Litigation Hold vs Archive — What Different?

	Litigation Hold	Archive Mailbox
Purpose	Keep every email, even user delete it	Move old email out of main mailbox
User can see?	No, it work hidden in background	Yes, show as "Online Archive" in Outlook
Good for	Law case, audit, investigation, staff leave company	Mailbox almost full
Who use it	Admin, legal team	Normal user

Simple example:

🔒 Litigation Hold: Company have problem with law. Sok delete important email. With hold, admin can still find that email.
📦 Archive: Dara mailbox is almost full. Archive move email older than 2 year to archive, so main mailbox have space again.

27 - Set Up Litigation Hold on a Mailbox (3:44)

Learn put mailbox on Litigation Hold in Exchange admin center. After turn on, even user delete email or empty "Deleted Items", Exchange still keep a copy. You can set hold forever, or set number of day.

28 - Set Up Archiving for a Mailbox (7:16)

Learn turn on Archive Mailbox for user. After that, user see new Online Archive folder in Outlook. Old email can move there auto, or user drag and drop by themself.

Tips

Litigation Hold need license that support it, like Exchange Online Plan 2 or Microsoft 365 E3/E5 (Exchange Online Plan 1 can add with Exchange Online Archiving). Check license first!
Hold can take some time (sometime up to 1 hour or more) before it start work. Don't test right away.
User don't know their mailbox is on hold. Tell only people who need to know, like legal team.
Before delete account of staff who leave, think about put mailbox on hold or convert to shared mailbox first. Then you not lose important email.
Archive is not backup! It just move email to other place. Still keep good backup plan.
Tell user where to find Online Archive in Outlook, or they think their old email is gone.
Use retention policy for move old email to archive auto, so user no need do by hand.

Conclusion

Litigation Hold make sure no email can be lost, and Archive give user more space for old email. Both is very important for company that need keep email long time. Watch 2 video and try on test user first. Keep learning my friend! 💡