Inbox Placement Rate (IPR) is the percentage of sent emails that were able to reach the targeted inboxes rather than the spam or junk folders of subscribers.
If you have a low inbox placement rate, it may be due to;
Bad IP and/or domain reputation,
After reading this content carefully, you will be able to understand why your emails are placed in spam boxes of the target audience rather than their inboxes and what you can do to increase your inbox placement rate.
Inbox Placement Rate: Number of emails delivered to inboxes of recipients / Number of emails sent by your organization.
Send your related campaigns to segmented customers.