HN
Hacker News
Top
New
Best
Ask
Show
Jobs
Comment by sinzone | Hacker News Reader
Parent
Full thread
sinzone
·
Which service/API do they use to send SMS?
View on HN
caniszczyk
·
They have their own via Cloudhopper:
https://blog.twitter.com/2010/cloudhopping
Reply on news.ycombinator.com