Cotap, Inc. ikambani iri muSan Francisco inotengesa app yekutumirana mameseji pamafoni emabhizimisi.
Zvechokwadi, shanduro yakaoma zvikuru yemutsara uyu ndeyekuti "Cotap, Inc. ikambani inotengesa shanduro yekutumira mameseji emabhizimisi yakatangwa muna May 2013 nevakuru vekare veYammer Jim Patterson naZack Parker. "