Google OAuth
When you connect your Gmail inbox to Kolvera, Google may show a screen that says “Google hasn’t verified this app”. This means the Gmail OAuth client or one of its requested scopes has not completed Google’s verification review. Continue only if you intended to connect Kolvera.
Why does this appear?
Google requires apps that request sensitive or restricted Gmail scopes to complete a verification review. Until review is complete, Google displays this warning and may limit new users. Kolvera’s Google Calendar integration has completed this review. Gmail verification is in progress.
Is it safe to proceed?
If you started the connection from Kolvera and recognise the Kolvera sign-in page, you can continue after reviewing the requested permissions:
- Gmail send — send approved one-off and campaign emails from your address.
- Gmail read — detect replies so follow-ups stop after a contact responds.
- Google Calendar — requested only when you connect Calendar; reads availability and creates or updates meetings.
All OAuth tokens are encrypted at rest using AES-128-CBC. Kolvera never stores your Google password, and you can disconnect at any time from Settings or Integrations.
How to connect Gmail
- Click Connect Gmail in Settings.
- Sign in with your Google account.
- On the warning screen, click Advanced (bottom-left).
- Click Go to Kolvera (unsafe).
- Review the permissions and click Allow.
Google Calendar connects without this warning — it’s already verified.
If you did not start this connection, the app name or permissions look wrong, or Google does not offer a way to continue, close the window and contact Kolvera support.
Further reading
- Google Support — Unverified Apps — Google’s explanation of the warning and user limits
- Kolvera Security & Privacy — how we protect your data