[falsedan]

Other way around, Authy gets Twilio another channel to upsell telco services. $0.09/auth is fine if you cache it for 30 days/ever.

And why not Google Authenticator? Some people either want to avoid Google products or be more appealing to customers who want to avoid Google. I know of Authy since itch.io use them.

[StudentStuff]

Damn, that is over $1 a year per user. Gotta have a high value customer demographic to justify that...

[falsedan]

Yeah, that's a great succinct analysis. Use this to auth your mult-dollar purchases, not your SSH logins.