Here is my running list of how many people use Paypal, Alipay, Paytm and other ePay platforms. Updated for August 2018 (the best I could find, at least).
This ePay user total list is a subset of my gigantic user total list. The user total list started out modestly back in 2011 and grew very quickly to close to 1,100 listings. You can purchase the entire list at the bottom of this post.
ePay User Totals
How many people use Alipay:
520 million users Last updated 5/18/18
How many people use Paypal:
237 million active accounts Last updated 4/25/18
How many people use Paytm:
300 million users Last updated 5/7/18
How many people use Samsung Pay:
5 million registered users Last updated 4/13/16
Please note that some of these numbers are easier to find than others, so some of these are based on news reports and not official company tallies. All stats are linked to their source unless it was sent to me directly from the company. It is also difficult, at times, to distinguish monthly social media users from total user accounts for many social media. In other words: This is the best I can find, but I don’t guarantee anything.