To unsubscribe from 50more emails:
On web: go to Notification Settings. To get to Notification Settings, click your profile photo in the top righthand corner and then click Notification Settings in the dropdown menu. To unsubscribe from any email type, simply uncheck the checkbox next to it. Once you uncheck it, your changes are saved and you can navigate away from the page. If you'd ever like to resubscribe to an email type, simply check the box.
On app: tap your profile photo in the bottom righthand corner of the navigation menu and then tap the gear symbol in the top righthand corner. From there, tap Notification Settings and then Email Notifications. You will see the list of all email types with a toggle switch next to it. If the switch is green, you are subscribed to that email. To unsubscribe from any email type, simply tap the switch so it turns to the "off" position. Your changes are automatically saved so you can navigate away from the page. If you'd ever like to resubscribe to an email type, simply turn the switch back on.