Hi! I understand you want to unsubscribe from CoinIn app emails and notifications. To help you best, may I ask if you want to stop just the emails, app notifications, or both? Also, are you currently using the CoinIn app on your Mac or another device?

In the meantime, here’s a general guide you can follow to unsubscribe from emails and notifications related to CoinIn:

1. Unsubscribe from Emails:
- Usually, at the bottom of any CoinIn email, there's an “Unsubscribe” link. Clicking this should stop promotional or notification emails from being sent.
- If you don’t see the link, you may want to check your account settings on the CoinIn app or website. Look for a section like “Email Preferences” or “Notifications” and turn off email notifications there.

2. Disable App Notifications on macOS:
- Since you are on macOS (OS X 10.15.7), you can manage app notifications via:
- Go to System Preferences > Notifications.
- Find the CoinIn app in the list.
- Select it and choose “None” or toggle off “Allow Notifications” to stop pop-up alerts.

3. Cancel Subscription (if applicable):
- If your concern relates to a subscription that triggers email notifications, you can cancel the subscription via the Apple subscription settings:
- Open the App Store.
- Click on your name at the bottom-left.
- Choose Subscriptions.
- Find the CoinIn subscription and select Cancel Subscription to stop billing and related notifications.

If you’d like, I can guide you through any of these steps or help with account-specific options. Just let me know!

Are you satisfied with this solution so far, or would you like me to help you with something specific?