Mobile Payement gateways

Hello, I’m creating a crowd funding site for a client, the site will be geared for developing nations like Kenya thus the use of papal/Credit cards is not huge. I was wondering if there is a mobile payment gateway i could use especially for Mpesa. If not how do i go about integrating an existing one? i.e https://developer.pesapal.com/how-to-integrate/step-by-step. Your assistance is highly appreciated.

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