Removed a collaborator from workspace but they are still receiving email notifications, help!

[Ban]

Looking for guidance. 

I have deleted/removed a collaborator from a workspace but for some reason they are still receiving email notifications whenever here is activity in that workspace. 
Not sure if I'm missing something?

Thanks.

[Juliana]

Hey Ban! Could you confirm the type of notifications these are (e.g., mentions, etc coming from noreply@airtable.com versus automations-based notifications)? If the former is true, would you be able to share with me via private message which former collaborators these were? Glad to dig into this further on our end.