Zoom meetings from Google calendar

[DHH1300]

I created a Zoom meeting in my Google calendar.  Half the invitees replied and some have said they never received the invitation.  

I would like to ask my colleagues to check their Inboxes around such and such a date and time to look for the invitation but I do not see the invitation going out as a Sent Mail in Gmail.

When I look at the meeting in my Zoom Account I can't tell when the invitation went out.

How may I find the date and time the invitations were sent?