With Yelo you need to purchase pre-paid credits beforehand in order to use all full features of Yelo.
100 credits cost approximately 1 USD.

You can also opt to buy a subscription and you'll have access to more features and 500 credits to spend monthly

Users with subscription don't pay for incoming calls if call forwarding is configured. For non subscription users, incoming calls are charged from existing pre-paid credits.

	Pre Paid	Subscription
Voicemail
Call Recording
Facebook Notifications
Email Notifications
SMS Notifications
No Ads
FREE Incoming calls
Multiple numbers
Voicemail Transcriptions

Currently Yelo users don't pay per voicemail.
If an account doesn't have credits calls will go straight to voicemail.
Outbound and Inbound calls are charged per country at different rates as described bellow while Yelo 2 Yelo calls between Yelo users are completely FREE of charge.