It took me a couple of days to change the frequency of my emails to daily, and weekly. These are for new followers, and writers that have liked, or left a comment on my blog posts.
The more followers I have, the further behind I get behind. Right now I have over 20,000 in my Primary inbox, I keep my social one at 0, after checking who has written posts, I delete them every night. My promotional ones, which I am always unsubscribing from, are at an all time record of over 10,500.