Hello guys.

I want to send quotation by mail from ODOO 11. 

I do all configurations for incoming and outgoing mail server in Odoo .

I also activate in GMAIL the access by less secure apps. 

Despite all these configurations, it still does not work. 

Here is my error 

""" Failed to send email 
Failed to send email via SMTP server 'None'.
SMTPDataError: 554 """

I need your help.

Thank you.