MailSlurp uses an API Key to authenticate user actions. You can find and reset the API Key for your account in the MailSlurp dashboard.
Once you login you will see the API Key displayed under
Developer Integrations. Click the settings cog and then click
Refresh API Key. You will be asked to confirm the action.
Once confirmed you will be logged out and asked to log back in again to confirm the change. Once complete your new API Key is now active.
When you reset your API Key your old API Key will no longer be valid. This means you will need to replace any instance of the old key in your application with the new key.