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Re:Google Calendar to end SMS notification on June 27th by blister on Friday May 29, 2015 @01:07PM (#9625802)
Text messages are largely free, and Google has been operating as a carrier through Google Voice for years.

I don't think they're deprecating SMS because of cost issues, I think they just want to move forward with richer notifications and don't want to spend any time working with a legacy system.

Re:Google Calendar to end SMS notification on June 27th by geogriffin on Saturday May 30, 2015 @06:08AM (#9629648)
They're definitely not free for businesses, especially worldwide. Thus why twilio is a business. Expect to pay maybe $0.03 a message. I'm not sure how that compares to advertising revenue..