I originally posted about being unable to send invoices via e-mail (Quickbooks 2018) about six weeks ago.  After going through all suggestions with no resolution, I was informed this a known issue under investigation (INV-38793), and instructed to contact QuickBooks support via chat.

Apparently I have been put on an affected users list. Told I would be informed once issue is resolved. 

Will there be any resolution to this?  I'm not comfortable upgrading to a newer version for just this purpose, especially when the problem could persist.  From what I can tell, Gmail is not allowing access to Quickbooks (even in less secure mode) because its proprietary browser is unsecure.

Does anyone have any insight to this?