Google Calendar events not being sent to attendees when events are updated

I use eM Client connected to Gmail and Google Calendar.  When I update an event to change a date and/or time I get a prompt to notify meeting attendees.  I verify that I want meeting attendees notified, but they never receive the meeting update.  In fact, they don’t receive anything at all from me. I have tested this several times and get the same result every time.  I’m using eM Client 6.0.24316.0 on Windows 7, 64-bit, English.

Hi Joe,
are the updates in your sent folder at all? Or are they perhaps stuck in the Outbox?

Regards,
Olivia

The updates show up in my Sent folder.

Hello Joe,
unfortunately, if the emails are shown in the sent folder they must have left through the gmail server, which means they have been sent.
The emails are probably sent to SPAM by your attendees’ spam filters or servers.

Regards,
Olivia