[samdung]

You could try AWS SNS SMS. This is also PAYG. A wrapper like https://sendwithses.com might make your work easier.

EDIT: With AWS SNS SMS you can set a spending limit and your bill will never go over that.

[grumple]

AWS SNS SMS seems best suited for internal communications (we use it for alerts); it does not seem suitable for commercial use where you require targeted sends, you'd have to create a topic for each customer.

Source: use it and twilio.

[wryun]

Are you sure?

https://docs.aws.amazon.com/sns/latest/dg/sms_publish-to-pho...

[grumple]

Clearly not.

Looks like we'd need https://docs.aws.amazon.com/pinpoint/latest/userguide/channe...

Which isn't bad, but is much more limited than what Twilio provides.

[neom]

I thought AWS SNS SMS was a wrapper around twilio? I recall a big song and dance on the Twilio side about them providing AWS with a service... Could be wrong.