Voxer is a free technology that allows you to leave a voice message
using your computer or smart phone.
These messages are 100% encrypted and secure.
The reason I use Voxer is that Voxer completely STOPS the problem of playing "phone tag"
When you have a question, you just pick up your smart phone, ask your question, and look forward to a reply.
No waiting. No phone tag. No undelivered emails.
These messages can be transcribed into text and are saved for future reference if you want them.