To enable the possibility for your users to subscribe to an auction (without bidding), go to YITH > Auctions > General > Cron settings.
- Allow users to follow auctions: Send email notification to customer when auction is about to end.
- Send emails to bidders before the auction end: Active bidders will receive an email when auction is about to end.
- Send email to bidders that loose an auction: Bidders that lost the auction, will receive an email once it ended.
For more information about email settings, check this page please.