Add-in: Attachment Librarian · Last updated: July 2026
Summary: this add-in does not collect, store, transmit, sell, or share any personal data. It has no servers, no accounts, no analytics, and no third-party trackers. Your email never leaves the Microsoft 365 boundary.
Attachment Librarian indexes the file attachments in your own mailbox so you can find the right document — and the right version of it — fast. When you click Index my attachments, it reads the metadata of your own messages that carry attachments (file names, sizes, senders, dates — it does not download the file contents), groups versions of the same document together using simple deterministic name-matching that runs entirely inside your Outlook session, and shows you the list. Clicking a result opens the email that carried the file. No artificial intelligence or external service is involved.
None. The add-in does not collect, log, or retain any information about you, your email, your attachments, or your usage. The index exists only in your task pane while it is open.
When you index, the add-in signs you in (Microsoft nested app authentication) and uses Microsoft Graph — Microsoft's own Microsoft 365 service — to read your own mail's attachment metadata. The data travels only between your mailbox and Microsoft Graph. It stays entirely within the Microsoft 365 boundary.
There is no PurposeBuilt Systems server in this process, and no third
party receives your data. The add-in uses a single read-only
delegated permission (Mail.Read) restricted to the signed-in
user's own mailbox — never anyone else's, and it can never modify or send
anything.
The add-in's static program files (HTML, JavaScript, icons) are served from GitHub Pages. Serving these files involves no customer data.
If this policy ever changes, the updated version will be posted at this URL with a new "Last updated" date.
Questions? Email Matthew@purposebuilt.systems.
PurposeBuilt Systems LLC · Clive, Iowa, USA