There was a time when etiquette meant knowing which fork to use. Now, it’s knowing how to ask friends—and complete strangers—for a penny for your thoughts… and then charge $8 a month for them. In the age of Substack—where everyone has a newsletter, a niche, and a payment tier—the rules are murkier. How often is too often? Must one subscribe back? And at what point does self-promotion become self-indulgent? For this installment of #OhBehave!, Vogue turns to two writers who know their way around both a sentence and a subscriber list. At the link in our bio, caroleradziwill and jalil_johnson_ break down the dos and don’ts of modern newsletter culture. Illustration by maggiemargaret_cowles