Check forms for missing details, return them for correction. Every one is ready to run, and you can adjust it in plain language.
Email eligible attendees and flag missing details in the list.
Your mail merge from Excel uses your work mailbox, and a results workbook shows which recipient rows need attention.
Send approved attendee emails and report failed sends.
Your group mailing goes out from the team mailbox, with duplicate addresses skipped and a reply showing sends and exceptions.