# Archiving 22 Years of Work Outlook Email Locally **Short answer:** Yes. Classic Outlook for Windows can export the whole mailbox to a `.pst` file that sits on a hard drive and opens later with no login and no connection to the employer's servers. ## Check first: is it allowed? - The mailbox belongs to the college. 22 years of faculty email almost certainly includes student records (FERPA) and, at a Texas public institution, records under state retention rules. - Many colleges restrict bulk export of mail to personal drives. Some block it outright: admins can disable PST export by Group Policy, in which case the option is grayed out in the wizard. - [ ] Ask IT whether a full export is permitted - [ ] Ask IT what happens to the mailbox on departure (access usually ends quickly) ## How to do it 1. **Use classic Outlook, not "new" Outlook.** The new app has gained PST export, but classic is still the more reliable route for large mailboxes. 2. **Download everything first.** With Cached Exchange Mode on, the export only captures the local cache, which by default is the last 12 months. - File → Account Settings → Account Settings → select account → Account Name and Sync Settings - Drag the "Download email for the past" slider to **All** - Wait until the status bar says **All folders are up to date** (could take a day or more) 3. **Export.** File → Open & Export → Import/Export → Export to a file → Outlook Data File (.pst) - Select the top of the mailbox - Tick **Include subfolders** 4. **Export the Online Archive separately** if there is one. It needs its own export from classic Outlook. 5. **Save to a local drive, not OneDrive.** OneDrive can block PST syncing. Copy the finished file to the external drive and keep a second copy. 6. **Spot-check** a few old folders to confirm the oldest mail made it. ## Reading it later without the work login | Option | Needs | Notes | | --- | --- | --- | | Classic Outlook | Outlook installed, no work account | File → Open → Outlook Data File. Full folders and search. | | Free PST viewer | Nothing else | e.g. Kernel PST Viewer, XstReader. Check current versions before relying on one. | | Convert to MBOX or EML | Thunderbird (free) | Open formats are a safer bet over decades than Microsoft's PST. | Recommendation: keep the original PST **and** a converted MBOX/EML copy. ## If export is blocked - IT can run a server-side export. Sometimes this is the only sanctioned route. - Dragging individual messages out as `.msg` files works for a selective archive, which may be easier to get approved than the whole mailbox. ## Sources - [Microsoft Support: Export or backup email, contacts, and calendar to an Outlook .pst file](https://support.microsoft.com/en-us/office/export-or-backup-email-contacts-and-calendar%20-to-an-outlook-pst-file-14252b52-3075-4e9b-be4e-ff9ef1068f91) - [Microsoft Q&A: Exporting all emails from new Outlook](https://learn.microsoft.com/en-us/answers/questions/5848991/exporting-all-emails-from-new-outlooks-sent-folder) - [Microsoft Q&A: Not all emails exported](https://learn.microsoft.com/en-us/answers/questions/2238084/while-manually-exporting-mailbox-all-the-emails-ar) - [Microsoft Tech Community: PST export in new Outlook](https://techcommunity.microsoft.com/discussions/outlookgeneral/pst-export-in-new-outlook-progress-update-and-current-capabilities/4476180/replies/4518284) - [FAU Help Desk: How to back up your Outlook emails](https://helpdesk.fau.edu/TDClient/2061/Portal/KB/PrintArticle?ID=162912) - [Mailbird: How to export emails from Outlook to a PST file](https://www.getmailbird.com/how-to-export-emails-from-outlook-to-a-pst-file-and-what-to-do-next/) - [What most people miss about exporting an Outlook mailbox](https://office.alibaba.com/officesoftware/how-to-export-outlook-mailbox)