If you are getting emails regarding saved searches, you can unsubscribe from individual search emails on your Saved Searches page.
https://www.ebay.com/mye/myebay/savedsearches
Click on the three dot menu by each entry to end email alerts for that search.
There are some options in your account settings under communication preferences that you may want to uncheck if you want to minimize emails received from eBay:
https://commspreferences.ebay.com/commsprefs
