social/marketing_security_group/security/ir.model.access.csv

1	id	name	model_id:id	group_id:id	perm_read	perm_write	perm_create	perm_unlink
2	access_mass_mailing_user	mail.mass_mailing.user	mass_mailing.model_mail_mass_mailing	marketing.group_marketing_user	1	1	1	1