Postman is unable to run. Email delivery is being handled by WordPress (or anoth

I’ve followed the set up for the Gmail configuration and still receive the message:

Postman is unable to run. Email delivery is being handled by WordPress (or another plugin).

When I do a connectivity test it says this:

SMTP https://www.googleapis.com:25 Open SMTP crcwltdcy.com No Yes Yes No No
SMTP https://www.googleapis.com:465 Open No – – – – – –
SMTP https://www.googleapis.com:587 Open SMTP crcwltdcy.com No Yes Yes No No

how do i fix this?!