An interaction server controls access between a plurality of senders and/or users exchanging electronic interactions. A sender may identify a user with whom the sender desires to interact using a public identifier associated with the user. The interaction server may coordinate the desired interaction without revealing private information, such as information about private user resources (e.g., personal contact information, personal payment information, personal data, etc.). The interaction server may determine whether to provide an interaction by evaluating an access code, by determining whether a user is trusted, and/or the like. The interaction server may provide the interaction, a notice of the interaction, a payload associated with the interaction, and/or the like to a user resource associated with the public identifier if access is allowed.