SMS is dead. Voicemail is obsolete. Right?

SMS and voicemail are old and busted technologies that should be, and have been, replaced by newer alternatives.

We’re led to believe, for example, that SMS has been largely left behind by enterprises and businesses in favor of team collaboration tools such as Slack.

And while it’s true that the number of SMS messages peaked in 2011, when 2.3 trillion messages were sent in the United States, SMS activity today still dwarfs everything else.

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