RelayKit

Workflows for what you build.

Every line of work has its own moments when a text matters. RelayKit knows yours.

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Pick your specialty

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Identity & auth SaaS

Verification codes, login codes, recovery codes. The texts that let a user in, and back in when they're locked out.

Phone verification at signup

Sends a one-time code at signup so a new user proves they control the number they entered.

  1. Verification codeSent when a user verifies their phone at signup.

SMS second factor (MFA)

Delivers the step-up code when a returning user logs in with SMS 2FA enabled.

  1. Login codeSent when a user logs in with SMS as a second factor. SMS is still commonly used for primary 2FA, but it is less secure than authenticator apps that use temporary one time passwords (TOTP) or passkeys. Consider using one of them instead.

Account security & step-up

Warns the user about an unrecognized sign-in and confirms them again before a high-risk account change.

  1. New sign-inSent when an account is accessed from a new device.
  2. Confirmation codeSent before a sensitive action — withdrawal, payment change, ownership transfer.

Account recovery

Sends a recovery code so a user locked out of their account can get back in.

  1. Recovery codeSent when a user recovers an account they're locked out of.