E-mail seemed like a good starting point before adding anything else, but it definitely won't work for everyone. The site was partly inspired by friends who go

E-mail seemed like a good starting point before adding anything else, but it definitely won't work for everyone. The site was partly inspired by friends who got together after a long time when they eventually realized that they were both interested in each other. E-mail could have worked in a case like that, but other people might need phone numbers or something else.