Formstack is one of the easiest ways to build custom forms that let you collect data your way.
Send personalized messages to selected members and see who was missed.
Your mail merge goes to eligible contacts from your campaign mailbox, with a tally of sends and contacts needing attention.
Collect member registrations in a counted CSV after signup closes.
Get a downloadable CSV after your form closes, with the entry count in its name and missing answers and possible repeats flagged for review.