Please check the following in your GMAIL account.
Go to the "Less secure apps" section of my Account.
Turn on Allow less secure apps. (Note: If your administrator has locked less secure app account access, this setting is hidden.)
* Keep in mind that because this recorder is old there is no SSL support and all of your emails are sent unencrypted which is not secure.
Some ISP's may block some email ports, because of this I suggest trying other ports for Gmail servers.
SSL is 465 or 25 if not using SSL
TLS is 587
In your situation, I would try port 25 and see if it sends the emails.