K12 Montana's Guide to School Email Retention and Google Vault

Here's a question that makes a lot of school administrators nervous: "How long do we need to keep staff emails?" It's one K12 Montana gets from districts regularly - and the answer matters more than most people realize. In Montana, school records retention requirements are defined in Schedule 7, published by the Secretary of State's office. Most districts interpret the guidelines to mean staff emails should be retained for three years - but this is ultimately a legal and policy decision your district needs to make with your attorney.

What K12 Montana can tell you is the technical side: how to make sure Google actually keeps those emails for however long your district decides.

Google Vault Is Your Safety Net

If your district uses Google Workspace and has Google Vault set up, Vault will retain all emails for every active account within the district, according to whatever retention period you've configured. That means even if a staff member deletes an email from their inbox, Vault holds a copy.

The Big Warning: Don't Delete User Accounts

This is where districts get into trouble. When a staff member leaves, the instinct is to delete their Google account and free up the license. But here's the problem: when you delete a user account, Google Vault purges all the data associated with that account too. If that person's emails were supposed to be retained under your policy, they're gone.

The right move is to suspend the account and move it to an Archived/Suspended Accounts organizational unit in Google Admin. The account sits there, taking up a license (yes, there is a cost), but the data stays intact. You only delete the account once it falls outside your retention window.

Once Vault's Retention Period Expires

After an email ages out of your configured retention period, Vault automatically removes it from both the archive and the user's mailbox. That's the system working as designed.

What to Do Next

Consult your district attorney and adopt a formal written retention policy. Then communicate that policy to K12 Montana in writing so we can configure Google Vault's retention settings to match.

Have questions about Google Vault or your district's email retention setup? Contact K12 Montana Inc. We work with Montana school districts every day to make sure their technology and compliance practices line up.