A system, a machine-readable storage medium storing instructions, and a computer-implemented method are described herein are directed to an Invitation Conversion Engine that generate a first social network invitation for transmission to a first external identifier of a potential member account from a first member account of a social network service. The Invitation Conversion Engine generates a second social network invitation for transmission to the first external identifier of from a second member account. Based on receipt of an acceptance of the second social network invitation, the Invitation Conversion Engine instantiates a new member account associated with the first external identifier. The Invitation Conversion Engine converts the first social network invitation to a first social network connection request from the first member account for the new member account. The Invitation Conversion Engine provides the first social network connection request to the new member account.