In file accua-forms.php change line 2896:
from
$header[] = 'From: '.$form_data_replaced['emails_from'];
to
$header[] = 'From: '.$form_data_replaced['emails_from'].' <'.$form_data_replaced['emails_from'].'>';
In file accua-forms.php change line 2896:
from
$header[] = 'From: '.$form_data_replaced['emails_from'];
to
$header[] = 'From: '.$form_data_replaced['emails_from'].' <'.$form_data_replaced['emails_from'].'>';