How does deleting without opening affect future inboxing?

Deleting without opening sends negative signals:

The mailbox provider sees a message arrived and was deleted without being read. This indicates the recipient did not value it.

Occasional deletes are normal. Consistent patterns of delete-without-open suggest the recipient does not want this sender's mail.

At scale, high delete rates without engagement degrade sender reputation. Providers conclude the mail is unwanted.

This is why list hygiene matters. Sending to disengaged users who consistently delete hurts your overall placement.

Cargo that gets thrown overboard unopened tells the port your shipments are not wanted.