Abstract: A collateral generation system generates and sends physical direct mail to one or more users on behalf of an entity with which the users have interacted. The collateral generation system can send physical direct mail to prospects, who may not have a prior relationship with the entity. In general, prospects would not normally be sent mailings because the entity lacks some primary information about the entity, such as an address or sufficient identifying information to obtain an address of the entity. The collateral generation system identifies prospects based on activity online and obtains mailing addresses of the prospects from an identification service while retaining user anonymity of those prospects. The collateral generation system generates collateral, which may be personalized for a defined block group of prospects (e.g., individuals or organizations), and the collateral is sent as physical mail to the prospects on behalf of the entity.

Abstract: A mail platform system accesses an identifier graph that links user identifiers to anonymized address identifiers linked to addressable endpoints. The mail platform system receives a first user identifier that identifies a user from an integration code included in a website accessed at a user device. The mail platform system determines that the first user identifier is associated with a second user identifier included in the identifier graph and identifies an address identifier linked to the second user identifier in the identifier graph. The mail platform system adds the first user identifier to the identifier graph and connects the first user identifier to the address identifier. The mail platform system determines to transmit a message to the user associated with the first user identifier based on activity information associated with the first user identifier, and retrieves an addressable endpoint based on the address identifier linked to the first user identifier.

Abstract: A collateral generation system generates and sends physical direct mail to one or more users on behalf of an entity with which the users have interacted. The collateral generation system can send physical direct mail to prospects, who may not have a prior relationship with the entity. In general, prospects would not normally be sent mailings because the entity lacks some primary information about the entity, such as an address or sufficient identifying information to obtain an address of the entity. The collateral generation system identifies prospects based on activity online and obtains mailing addresses of the prospects from an identification service while retaining user anonymity of those prospects. The collateral generation system generates collateral, which may be personalized for a defined block group of prospects (e.g., individuals or organizations), and the collateral is sent as physical mail to the prospects on behalf of the entity.