Best option

If your receipts already arrive in Fastmail, connect the mailbox directly with a Fastmail app password. That gives The Paper Keep another live feed for both historical and new receipt emails.

Connect Fastmail

  1. Create a Fastmail app password
    Generate one with IMAP access in your Fastmail account settings.
  2. Open Settings
    In the Receipt sources section, click the Fastmail pill under Connect another inbox.
  3. Enter your Fastmail address and app password
    Use your full Fastmail address as the username and tick the folders you want scanned.
  4. Choose the import range
    Use 30 or 90 days first if you want the first import to complete sooner.
  5. Save the connection
    The Paper Keep validates the mailbox and starts scanning right away.

For the provider-neutral version of the same flow, see Connect an IMAP mailbox.

Use forwarding instead

Fastmail rules and filters are still a good choice if you only want a small set of senders to feed The Paper Keep. Find your personal forwarding address in Settings and then follow Email forwarding setup.

After setup

  • Receipt candidates are fetched and parsed in the background, so new receipts may appear over several minutes rather than all at once.
  • The connection status in Settings shows when the inbox is up to date or paused under limits.
  • You can keep Fastmail connected alongside Gmail or other IMAP inboxes.
  • You can trigger another full scan later with Scan now.