How to send a meeting reminder from your own Gmail
Where a reminder comes from changes whether it works. A note from your real Gmail lands like a message from a person: it gets opened, it gets replies, and it doesn't trip spam filters the way an unfamiliar "no-reply" address can.
You can do it manually — open the event, copy the guest's address, write a quick line the day before. It works; it just relies on you remembering every time.
Rather than remember to do this every time, CalConfirm sends the reminder automatically — for any meeting on your Google Calendar, a personal note goes to your guests 24 hours ahead, from your own Gmail. Every reminder is sent as you, from your inbox — so replies come straight back to you.