1. Log in to your Betrivers account using the Betrivers app or website.
2. Click on the “My Account” or “Cashier” section.
3. Select the “Withdraw” option.
4. Choose “Check by Mail” as your withdrawal method.
5. Enter the amount you wish to withdraw and click on “Continue”.
6. Verify your personal information, such as your name and address, to ensure your check is sent to the right location.
7. Confirm the withdrawal request and wait for the check to arrive by mail.
8. Once you receive the check, you can deposit it into your bank account.

Please note that the withdrawal processing time for check by mail can take up to 14 days, and additional time may be required for the check to arrive by mail.

It is also important to keep in mind that there may be fees associated with withdrawing via check by mail, and Betrivers may require you to provide additional documentation before processing your withdrawal request.