Google Calendar can send reminders of my events to my Gmail inbox.
Is it possible to tell Google Calendar to send those e-mail reminders to a different e-mail address?
I think you'll find that Google Calendar sends the reminder to the Google account that owns the calendar.
So if you make a Google account (e.g., with a product like Blogger) that has an account name that looks like a non-Google email address (e.g., email@example.com) and an associated primary email address which is that address, then reminders for events set up in that account's calendar are sent to the non-Google email address.
Another approach, if your calendar is already set up in your Google account that's named with a Gmail address, might just to be use a forwarding rule in Gmail to send reminders on. To do this:
All types of Google Calendar reminders are sent only to the Calendar event owner.
If you invited a guest to your event and he accepted the invitation and added the event to his calendar, he will get a reminder according to his calendar default behavior.
If this is not the behavior you are looking for, you might want to try Un4gettable.
a free Google Calendar add-on that sends text message (SMS) Reminders to clients.
You could change the Contact email of your Google account:
However, this will send a lot of communication from Google that used to come to your gmail account to that new address.