Email Deliverability is defined as an email landing in a recipient's main inbox and not in the spam folder.
Dover primarily tracks deliverability using your email outreach Open rate. If the open rate is low, we will work with you to come up with a solution that we think will increase deliverability.
Since we manage responses for you, we keep track of candidates mentioning that the email went to their spam folder. When this occurs, we might ask the candidate to mark the email as "Not Spam".
To check your response rate, head to app.dover.io/reports.