This adds a series of CSS styles to the `<head>` of mailings in order to ensure better mail client compatibility. task-2554899 X-original-commit: ace475defca0c143d707f7b53d9f19a9db6cfe3e Part-of: odoo/odoo#77724
This adds a series of CSS styles to the `<head>` of mailings in order to ensure better mail client compatibility. task-2554899 X-original-commit: ace475defca0c143d707f7b53d9f19a9db6cfe3e Part-of: odoo/odoo#77724