Just to go back to Square 1.......
A GMail Calendar is always associated with a primary GMail address. Notifications of Events, and of a Daily Agenda summary of all events for the coming day can be sent by various means to that primary GMail address. I wanted also to send that Daily Agenda to a non-GMail address. How?
Well, sort-of-possible, and sort-of-not-possible.
First, there's no way of directing the Daily Agenda to an external address directly from within Calendar. It will sent to the primary GMail address and no other.
In theory, notifications of individual events can be sent to external addresses, either by inserting that direction into an Event, or by sharing the whole Calendar with an external address. I find that to work intermittantly (and I can'f figure out the rationale....). But in any case, the Daily Agenda is *not* sent to the external address by either of those methods.
But there is a work-round. The SETTINGS for the GMail account associated with a Calendar has the provision to forward all emails received to an external address. It also has a neat FILTER by which you can specify that only certain incoming mails mails (defined by Sender, Subject etc etc...) are forwarded to another address. As all Calendar email notifications (both Events and the Daily Agenda) come from <
[email protected]>, you can create a filter to forward all those incoming notifications to the external mail address. If you add another filter element - mail must also contain "Daily Agenda" in Subject line - then only that Daily Agenda will be forwarded...
Works well enough, and solves my immediate challenge. But it's a long walk...
AGB