Identifying deliver failures

I am considering moving my newsletter to Ghost. Will I be able to know which email addresses are accepting my newsletters? If some ISPs block emails from Ghost, will I have a way to know which emails are not receiving my emails?

You’ll have a couple layers of tools to work with.

In the Ghost dashboard, you can see the percentage of people that open each newsletter, and you can see when an individual member last opened a message.

Because Ghost uses MailGun to send the bulk emails, you’ll also have another layer of more advanced tools in your MailGun account.

I believe Mailgun will have the reports you are looking for to answer your questions. But do be sure, you could go ahead and sign up for a free Mailgun account and look around in their interface at what is available.