Dear all i canot send email when an alarm cames throgh my gmil account

i do all the settings as you describe in the confoguration but when i press the send button i receive an error 

I try to send a screenshot that i uploeded on the server in order for you too see what i insert in the required fileds of the diaiew. I tried putting both 465 and 587 for port but i always receive the message "Failed to send. Please check the email address , server address etc" when i press the send button. What do i do wrong?