If you are subscribed, but you're not getting email notifications when new deals are available, it might be the case that Gmail is filtering our emails into their "Promotions" folder.
In your inbox, locate the "Promotions" folder, once you locate the DIMBY notification, drag and drop the email into the regular inbox. Then click "Yes" to the yellow suggestion box asking if Gmail should remember your decision to filter DIMBY notifications into your primary inbox in the future. Please see the attached video for demonstrated directions.
Note that deals are typically sent on a weekly basis, for 5 days, starting Thursday and ending Monday. So in most cases, you can expect to get two emails each week - one on the first day of the deal (Thursday) and one on the last day of the deal (Monday).