About the service, a post on Google Africa's blog said, "Gmail SMS automatically forwards your emails as SMS text messages to your phone and you can respond by replying directly to the SMS."
The post said that users can control the emails through commands like More, Pause and Resume. Moreover, they can create new mails via SMS and send the same to any email address. This email will be automatically placed in the correct conversation thread.
Gmail users in the three African countries only require a feature phone with basic voice and SMS features in order to make full use of this service. Users can activate this service by modifying the settings in their Gmail accounts and registering their phone numbers with Google.