What are some alternatives?
When comparing HulloMail and Google Voice, you can also consider the following products
YouMail - YouMail turns visual voicemail into a personal assistant for handling all your missed calls.
RingCentral - RingCentral is the leading provider of cloud-based communications and collaboration solutions for small business and enterprise companies
Hi Voicemail - Stop robocallers filling up your voicemail
Viber - Free and secure calls and messages to anyone, anywhere. Keep your conversations going no matter where you are.
Call Me Private - Call Me Private masks your phone number behind a virtual number, for privacy, or for a professional...
UberConference - UberConference provides a rich visual interface for conference calls. Simple, visual, and free to use, it's audio conferencing done right.