A computer implemented method, computer program product, and system for providing a dynamic, intelligent e-mail signature. In an embodiment, the method includes the steps of receiving an e-mail from a sender, storing the e-mail for later retrieval, assigning a URL representing the e-mail signature and sending the URL to the sender. Further, the method includes the steps of receiving the URL from the e-mail recipient, analyzing the e-mail and social media activities of sender and recipient, determining a signature and sending the signature to the recipient.