Pull the recipients from {{sequence_name}} who opened or clicked but never replied, and re-verify their addresses before anything gets sent. Then draft a short invite to my {{roundtable_survey_or_podcast}}, personalized to each person's role, with one CTA and no links in the first email. Set it up as a new sequence in Hunter and leave it for my review, because an invite that reads like a mail merge defeats the point of the format.