A system and method to facilitate transactions between a customer and a vendor is disclosed. The system and method include receiving a response email, wherein the response email includes a short lookup token associated with the transaction between a customer and a vendor; determining the long token associated with the short lookup token; decoding the long token; performing a validation of the decoded long token; and processing the transaction, on a condition that validation is approved. A system and method may also include receiving an email, the email includes a short lookup token integrated into the string of characters that compose the email address and is associated with the transaction between a customer and a vendor; determining a long token associated with the short lookup token; decoding the long token; performing a validation of the decoded long token; and processing the transaction, on a condition that validation is approved.