A Substack phone number for verification is a United States mobile number that receives the Substack SMS code for you, so your own number stays private. Substack is a platform for writers to publish newsletters and monetize their content.
Substack asks for a phone number during account creation or when enabling security, sending a verification code via SMS. SNSPhone numbers are real US carrier numbers, not VoIP, and one Substack verification costs $0.30 with a 20 minute window and an automatic refund if no code arrives.
Ways to verify Substack with a US non-VoIP number.
$0.30per verification
A private US number for one Substack code. The window is 20 minutes, another code on the same number is free, and if Substack sends nothing the full price returns to your credit.
Substack asks for a phone number during account creation or when enabling security, sending a verification code via SMS.
Substack prefers real mobile numbers to verify writers and reduce spam newsletters.
Check your SMS inbox for the code and enter it before it expires.
What the SMS looks like
Sample text. The real message comes from Substack and shows in your console with the code picked out.
Step by step
The whole job takes about two minutes once your account has credit. Here is every step, from signup to a secured Substack account.
Press Sign up. Your browser makes an access token; save it as a file or copy it. No email or phone number is needed.
Open Credits and top up with USDT, USDC, BTC, ETH, BNB, SOL or LTC. The minimum is $30 ($20 in lower-income countries), and the first top-up from $100 gets a bonus.
Open New verification, pick Substack and confirm. A US mobile number shows at once, with a 20 minute window.
Choose United States (+1) in the Substack form and type the 10 digits. Ask Substack to send the code by SMS, not by a call.
The SMS shows in your console within moments, with the code picked out and a copy button. The page refreshes by itself.
Type the code into Substack, then add your own email or an authenticator app in the Substack settings so later sign-ins do not depend on the number.
Ask Substack to send the code again from its own screen. If nothing arrives in the 20 minute window, the verification closes and the full price returns to your credit by itself.
Cancel the verification while it is waiting: the full price comes back at once. Start a new one and you get a different US number.
Press Another code in the console and ask the service to send a new SMS. It reaches the same number inside the window, free.
A verification number is not yours after 20 minutes, so add your own email or an authenticator app to the account before the window ends.
More answers about numbers, refunds and rentals are on the FAQ page, and the reasons apps refuse VoIP are explained in the non-VoIP guide.
Answers about using a US non-VoIP number with Substack.
Yes, Substack accepts US numbers for verification. A real US mobile number from SNSPhone can be used to receive the SMS code.
Substack requires phone verification to confirm user identity and reduce spam. A non-VoIP number from SNSPhone can help complete this step.
The Substack verification code expires quickly, usually within a few minutes, so enter it promptly after receiving it.
Yes. SNSPhone sells only United States mobile numbers from carriers, so Substack sees a mobile line, not VoIP.
$0.30 for one verification with a 20 minute window. If no code arrives, the full price returns to your credit.
Create an account, add credit and get a US non-VoIP number in under a minute. No subscription and no monthly spend.
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