When generating coupons for customers, the email was sent twice due to the values given on the email_values that is generating a TO (email_to) value (plus using the one given on the template (recipients_ids)) opw-2574046 closes odoo/odoo#77095 X-original-commit: 1eb8cdec60a5f460f57669ce4336efbc5b0279c8 Signed-off-by: Simon Goffin (sig) <sig@openerp.com>