# Bidder Maintenance
This page will help you manage your bidders by highlighting data issues that should be addressed.
- Duplicate Emails - The duplicate emails page is used to view bidders that share an email address but have different bidder#'s. This causes issues for online bidding since we don't know which bidder they are when they sign in.
- Link Bidders - The link bidders page is used to link bidders together based on rules.
- Multiple Tickets - The multiple tickets page can be used to create new bidders as guests for bidders that currently have multiple tickets assigned to them.