In the early days of the inbox, it afforded the naive human organism a certain pleasure to receive an email. Ah, someone thinking of me . . . So a note or two of companionship whistled through the lonely day. Thanks to email, the residual eloquence of a moribund letter-writing culture received a rejuvenating jolt of immediacy. As late as the late ’90s and early ’00s, during the last days of dial-up, it still felt nice to send and receive the occasional squib, to play an epistolary game of catch with some friends.