We Gave Every Kanvo Account a Real Phone Number. Your Carrier Should Be Nervous

As of this week, any signed-in user can claim a genuine US or Canadian texting number from inside Kanvo — texts to it land in your inbox next to Slack and WhatsApp. Here's how it works, and the one honest catch.

A real number, claimed in about a minute

Open Settings → Texting number, search available numbers by area code, and claim one. It is a genuine US or Canadian number — not a shortcode, not a shared pool, not a "verification only" line. It is yours for as long as you keep it.

Why this took so long

Because SMS is not an API, it is a regulated utility. Every number is provisioned through Twilio, every claim holds the number before money moves (and releases it cleanly if anything fails), and a webhook routes inbound texts by the number dialled — not by whoever messaged last. The boring engineering is what makes it…

The honest catch

Carriers in the US now treat application-sent texts as A2P traffic, and they want every sender registered. Until Kanvo's campaign registration completes, inbound texts to your number work perfectly, but some outbound replies may be rejected by the carriers with error 30034 — while looking sent on your screen. We show…

What we are not doing

We are not becoming your phone company. Calls, voicemail and your SIM stay exactly where they are. This is texting — the part of your phone number that was always just messages — finally admitted to the inbox where it belongs.

Kanvo Team

Writes here about what Kanvo is building and why — the send path, the evidence it leaves, and the decisions behind both.

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