Reliable Outlook retrieval combines least-privilege delegated access, paginated folder reads, per-folder delta links, selective bodies, and explicit support for shared mailbox context.
Use Microsoft identity to obtain the required delegated mail scopes, validate the returned identity, and bind tenant, user, and DewEngine account IDs. Do not infer ownership from an email address supplied before OAuth.
List folders, choose the product's synchronization set, request only necessary message fields, and follow @odata.nextLink rather than constructing the next URL. Hydrate MIME or attachments only when required.
Run message delta until Graph returns @odata.deltaLink, commit the resulting changes, and save the complete link unchanged. Moves and deletes require reconciliation across the folders the product synchronizes.
Shared and delegated mailboxes depend on the signed-in user's rights and the selected Graph permissions. Represent the target mailbox explicitly and test the exact organization policy rather than promising universal shared-mailbox access.
No. Treat the returned URLs as opaque provider state and replay them as documented; parsing or rebuilding them can lose encoded query state.
No. The app is limited by its delegated scopes and by the signed-in user's actual rights to the target mailbox.
Not yet. Gmail, Microsoft Graph, and IMAP/SMTP connectors are planned. This guide documents the intended architecture and the provider requirements a production release must satisfy.
DewEngine is in development. Real use cases decide what ships first.