When you create a Flint account with an email address and password, Flint emails you a six-digit verification code. The email comes from Flint at support@mail.flintk12.com. Your account is confirmed when you type that code into Flint.
Flint shows the code screen as soon as you sign up. It says "Enter the six-digit code sent to" your email address. Type the code into Email verification code and click Verify. The button in the email only opens this code screen; it does not confirm the account by itself. A school mail scanner that opens links in the email therefore cannot use up or complete the confirmation.
This confirmation step is separate from signing in with Google or Microsoft. For problems with those sign-in methods, see common login errors.
If the email doesn't arrive
If the code hasn't arrived after a few minutes, check your spam and quarantine folders first. Ask your IT team to check whether your school's mail filter blocked the message. These sender details can help them locate it:
- The sender address support@mail.flintk12.com
- The sending domain mail.flintk12.com
If your mail system requires an IP allowlist, ask support@flintk12.com to confirm the current sending IP addresses before changing the rule. Sending addresses can change; an old address is not evidence that today's messages come from that IP. Google's guide to adding IP addresses to allowlists in Gmail explains the Google Workspace controls.
Get a new code
Once your IT team confirms the allowlist is active, request a new code:
- Go to the Flint sign-in page, enter the same email address and click Next.
- Enter the password you chose and click Sign in. Flint opens the code screen because the account isn't confirmed yet. Signing in does not send a new code.
- Click Resend code. Flint emails a new code, and any earlier code stops working.
- Enter the newest code and click Verify.
You can request one new code per minute. If you click Resend code again too soon, Flint asks you to wait a minute before trying again.