A few of my friends from college (and I) keep in touch with each other through a regular exchange of e-mail messages. That's been a significant mode of communication for a while now. It helps get things across to everyone at the same time.
When we started out, none of us were formally engaged or married. In the last twelve months, five out of the six of us have taken the pheras and the sixth is now about to exchange rings. What struck me as interesting is that everyone now signs their e-mails with a "Avantika & Mrinal" (both fictitious names) type of sign-off, rather than just their own name. The thing is, it's not just about the signature, is it? It's about just about everything under the sun. What you do, what you eat, when you sleep, when you get up, where you go, where you don't go, what you buy, what you don't buy... just about every decision is now made together. Sometimes that makes the decision easier, sometimes that makes it more difficult. Sometimes it makes life more interesting, sometimes it makes it duller. Either way, it is what constitutes the essence of marriage. Togetherness. Doing things together. Having dinner together. Going out together on weekends. Being together. That's what it's all about.