Hello!
So I have run into the same problem that I see many people having about the ‘unsubscribe from form notifications’ issue. Now my client is unable to receive emails.
I have read the community posts and understood that Webflow doesn’t have a solution for this yet.
I just wanted to request any Webflow staff to whitelist the email (info@agritelgrain.com) from their end and I’ll ask my client to whitelist the email (no-reply@webforms.io) from their end so at least we start receiving form notifications again.
Until the problem comes again 
Then, I will look into using a third party service.
Thank you very much!
Here is my site Read-Only: Link