To measure email deliverability, you should monitor the following metrics:
Delivery rate: The percentage of emails that successfully reach the recipient's server. Inbox placement rate: The percentage of emails that land in the inbox rather than the spam folder. Bounce rate: The percentage of emails that could not be delivered. Open rate: The percentage of delivered emails that are opened by recipients. Click-through rate: The percentage of opened emails that result in clicks on links within the email.