When sending emails the odoo logo is shown in the email and not the company logo.

I tried to change mail_notification_light and add:

< img t-att-src="'/logo.png?company=1'" /> 

OR
< img t-att-src="'http://.../web/image?model=res.company&id=1&field=logo'" /> 

OR
< img t-att-src="'image_data_uri(company.logo)'" />

None of them work correctly!

Thank you