Signing In
How sign-in works on the web, including new-device verification and two-factor codes.
Sign in at getcosmo.app/sign-in with your email and password. After signing in you'll land on the activation page, which checks your organization's subscription and hands you off to the desktop app.
New device verification
The first time you sign in from a browser Cosmo doesn't recognize, you'll be asked to verify the device:
- Enter your email and password as usual.
- Cosmo emails you a 6-digit verification code.
- Enter the code on the verification screen.
Once verified, the device is trusted — you won't be asked again on that browser unless you clear your cookies or sign in from somewhere new. This protects your account even if your password is compromised.
Two-factor authentication
If your account has two-factor authentication enabled, you'll be prompted for a second verification code after your password is accepted. The code is sent to your account email.
Troubleshooting
- Didn't receive a code? Check your spam folder. Codes expire after a short window — use ← Back and sign in again to request a fresh one.
- "Unsupported step" error? Your account requires a sign-in method the web form doesn't support yet (for example, a password reset). Contact support.