Gmail users can send free SMS to their contacts in certain counties and supported mobile networks using the chat functionality in Gmail.
This service is available in the US, but also to several African countries. Here is a list of the African countries and the supported mobile networks in each country:
Other countries that you can SMS via Gmail are: Indonesia, Israel, Palestinian Territories, Philippines and Saudi Arabia.
Here is the Gmail help page with instructions on how to use Gmail to send free SMS or chat messages if you don’t know how to do it:
More Free SMS Service to Africa
Check out the other free SMS services to Africa at TextMeFree.com: