Email delivery can sometimes face issues due to the following reasons:
Incorrect Information: If a prospect has mistakenly entered their email incorrectly, Warmify might be trying to send emails to an address that doesn’t exist.
Inactive Email Addresses: The email address provided by the prospect might no longer be in use.
If the above solutions don’t resolve the issue, consider reaching out to the prospect through alternative communication channels or contact Warmify support for further guidance.