MFA For Shared Accounts

Multi Factor (2FA) Authentication consolidated and automated. Receive your account verification codes all in Slack and access your shared accounts easily, and securely.

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Slack MFA
Real US Phone Numbers

Phone numbers are real US mobile numbers that will work with all major online platforms.

Verify All Your Accounts

Receive a verification code in a private or shared Slack channel via SMS or voice call instantly and securely.

Share MFA Codes With Team

Use numbers on any website and speed up login with your partners and employees by sharing MFA in Slack.

Consolidate Two Factor Authentication

If you’re sharing a login with someone, there isn’t an easy way to properly secure your account - until now. Enable two-factor authentication and receive verification codes right in Slack.

The process

Add to Slack Workspace

Get started by adding the app to your Slack workspace.

Provision a Phone Number

Generate a unique virtual or mobile phone number that belongs only to you.

Enable 2 Factor Authentication

Turn on two step verification on your various online accounts.

Receive Verification Code

A verification code will be sent to your Slack channel via text or voice call.

Shared MFA Device in Slack

All non-voip numbers are USA based and will work with any service.

Services Non VoIP (real) VoIP (virtual)
All ALL Services
Amazon Amazon
Apple Apple
Chase Chase
Facebook Facebook
GoDaddy GoDaddy
Google Google
Intuit Intuit
Instagram Instagram
LinkedIn LinkedIn
Microsoft Microsoft
Paypal Paypal
SendGrid SendGrid
Stripe Stripe
Twilio Twilio
Twitter Twitter

Refer to our support documentation for a full breakdown

NonVoIP Phone Numbers

All Non-VoIP numbers are USA based real phone numbers that will work with ALL online services.

Clerk MFA

We support both VoIP and Non-VoIP phone numbers. All plans include unlimited users and unlimited seats.

Get started with a 5 day money back guarantee.
$29.99/ mo
  • Voice Enabled VoIP Number
  • Works with Most Services

Non-VoIP plan is based on 100 SMS codes per month and 10 user team. Each additional team member is $2/mo.


Helpful answers

We know there's a lot to learn and read about all that Clerk can do. Here are some of the most frequently asked questions.

SMS verification, or SMS two-factor authentication (2FA) and SMS one-time password (OTP), allows users to verify their identities with a code that is sent to them via text message.

This is real mobile number that is associated with a physical sim card. Highly secure services such as Banks, Facebook, LinkedIn will only send a verification sms to a non virtual number.

Absolutely. We can send the verification SMS direct to your email address, or any webhook.

If you are unable to receive SMS verification codes most likely the service you are enabling MFA on does not accept VOIP phone numbers. You will need to request a Clerk non-voip number.

Yes. Most existing internet services such as Google, Apple, and others allow the use of a US based phone number for verification purposes.

Our phone numbers are NEVER recycled and completely unique for each individual customer.

*Chat with us! Talk to a real customer success specialist, respond in less than 90 seconds hours 6:00 am PST - 9:00 pm PST