The week of

Three reminders to registered attendees. The day-of reminder is the one that drives most live attendance.

Day before

“You’re registered for tomorrow.” Calendar attachment if you didn’t send one already. Add the join link prominently.

Two hours before

Short, scannable. Time. Join link. One sentence about what’s covered. The two-hour reminder pulls the most no-shows back into attendance — most webinar tools don’t ship this email by default and it’s the highest-leverage one in the cadence.

Five minutes before

“We’re starting in 5 minutes. Join link.” Plain text, no formatting. People who attend live almost always click this email.