Email forwarding setup

Gmail lets you import filters as an XML file. When you're signed in, The Paper Keep can generate a personalised filter file pre-configured with your forwarding address. Open Settings → Receipt sources, choose Setup guides on the forwarding row, and download it from there — then import it into Gmail.

1. Add and verify your forwarding address
   In Gmail: Settings → See all settings → Forwarding and POP/IMAP → Add a forwarding address → enter your forwarding address (found in Settings).
   Gmail sends a verification email to that address. It will arrive in The Paper Keep as a receipt — open it from your Receipts list, find the confirmation code in the extracted text, and paste it back into Gmail.
2. Import the filter
   Download the personalised filter from the in-app setup guide (see above). Then in Gmail: Settings → Filters and Blocked Addresses → scroll to the bottom → Import filters → choose the downloaded file → Open File → Create filters.
3. Done. The filter matches emails with receipt, invoice, order confirmation, and similar subjects. You can edit it in Gmail's filter list to add more senders or terms.

Outlook.com (and the new Outlook desktop app for Windows, which shares the same interface) has no filter import mechanism. Set up a rule manually:

1. Go to Settings (gear icon) → Mail → Rules → Add new rule
2. Name the rule The Paper Keep receipts
3. Under Add a condition, choose Subject includes and add terms one at a time: receipt, invoice, order confirmation
4. Change the condition match to any (so it's OR, not AND)
5. Under Add an action, choose Forward to and enter your forwarding address
6. Click Save

Your forwarding address is in Settings → Receipt sources once you're signed in.

Classic Outlook for Windows stores rules in a proprietary binary format that can't be generated externally — setup is manual only:

1. Go to File → Manage Rules & Alerts → New Rule
2. Choose Apply rule on messages I receive → Next
3. Tick with specific words in the subject, click specific words and add: receipt, invoice, order confirmation, order received
4. Click Next, tick forward it to people or public group, click people or public group and enter your forwarding address
5. Click Next through exceptions, name the rule, click Finish

If you're using new Outlook for Windows (2024 onwards), follow the Outlook.com instructions above — it's the same interface.

Yahoo Mail has no filter import. Set up forwarding filters manually:

1. Go to Settings (gear icon) → More settings → Filters → Add new filters
2. Name the filter The Paper Keep receipts
3. Set condition: Subject → contains → receipt
4. Set action: Forward to → enter your forwarding address
5. Click Save

Yahoo filters support one condition per rule. Create separate rules for invoice, order confirmation, etc. if you want broader matching.

Fastmail supports Sieve, a standard mail filtering language. Paste the script below into the Sieve editor, replacing [email protected] with your actual address from Settings.

1. Go to Settings → Filters & Rules → Edit custom sieve rules
2. Paste the following (or append it to existing rules), replacing the address:

require ["copy", "fileinto", "imap4flags"];

if anyof (
    header :contains "subject" ["receipt", "invoice",
        "order confirmation", "order received",
        "your order", "payment confirmation",
        "purchase confirmation"]
) {
    redirect :copy "[email protected]";
}

The :copy flag forwards a copy and leaves the email in your inbox. Remove :copy to forward-only (skips inbox). This Sieve script also works on ProtonMail and any other Sieve-enabled provider.

Apple Mail rules run locally on your Mac and only fire when Mail is open. For reliable capture, set up forwarding at the provider level (iCloud web, Gmail, etc.) instead.

1. Open Mail → Settings (or Preferences) → Rules → Add Rule
2. Description: The Paper Keep receipts
3. Condition: Any of the following are true → Subject → contains → receipt
4. Add more conditions for invoice, order confirmation, etc.
5. Action: Forward Message → your forwarding address
6. Click OK

Rules only run while Mail is open. If you want receipts captured even when your Mac is off, set up the rule in your email provider's web interface instead.

Any email client that supports forwarding rules will work. The pattern is always the same:

• Condition: subject contains receipt, invoice, or order confirmation
• Action: forward to your forwarding address (found in Settings)

You can also forward emails manually at any time — just forward them to your forwarding address and they'll be picked up within seconds.

If your provider supports Sieve (common on self-hosted mail, ProtonMail, and many IMAP servers), use the Fastmail Sieve script above — it's a standard and works anywhere Sieve is supported.