More contacts from the same traffic and the same calls.
Email is your highest-return channel, but it only reaches people who gave you an address. Forms capture a small share of visitors, and everyone else costs media spend to reach again.
Bituser adds the visitors and callers you already attracted to your email platform as new contacts, deduped against the list you have. Your list grows without more media spend, and every campaign reaches more of the people who showed interest.