This test will allow you to test the different options of the form mailer.
form_format determines in what format the information is delivered. Its values are 'text',
'csv', 'html', 'xml', and 'default' (same as 'text').
form_order dictates in what order the fields are reported. Its values are 'default' (the same order as they
appear on in the form), 'alpha' (alphabetized by field name) or a comma-separated, case-sensitive list of all or some field names.
form_interval determines the
frequency and packaging of delivery. To receive one email per form submission, the form_interval values are 'default' (every 10 minutes), 'hourly', and 'daily'. To receive all
submissions in an attachment of one email, the form_interval values are 'digest', 'hourly_digest', and 'daily_digest'.