LTTR/SHOP supports FastSpring as a payment collector and as a merchant of record. The set-up process is a bit more complex in the beginning, but you will be rewarded in the long term by a very simple accounting and an effort-less compliancy with world-wide taxes.

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1. Create a FastSpring account
2. Ask FastSpring support to set up an account
3. Enable currencies (OPTIONAL)
4. Create a Popup storefront
5. Whitelist checkout domains in the Popup storefront
6. Link the LTTR/SHOP with FastSpring
7. Provide the API credentials

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