Set the target reply rate for a mailbox's (campaign's) warm-up traffic — the percentage of outbound warm-up emails that should receive a reply from the network. Higher reply rates are a strong positive signal for sender reputation.

Note: If the campaign's SMTP and IMAP email addresses do not match (e.g. relayed sending), Mailivery treats the response rate as 0 regardless of what you set here, because replies can't be reliably routed back to the original sender.