Where is my receipt?
Your payment history, and the M-Pesa reference.
Payments
Every payment you have made is on your payments screen, with the date, the programme, the amount and the M-Pesa transaction reference.
You can also download the whole thing — payments included — as a file, from your account settings.
Emailed receipts are not sent yet. The toggle exists in your notification settings and is labelled as not sending, so you can see that rather than wonder.