Here you can choose between "PHP-Mail" and "SMTP". PHP-Mail is the default routine that normally every hoster provides where WebsiteBaker can be used. However, SMTP is recommend - if it's possible, you can ask your webhoster. SMTP is generally more reliable, but you should first find out exactly. If you are uncertain we recommend the PHP-mail mail routine.
If SMTP is selected, you can specify here the settings you need:
SMTP Host and SMTP authentication. What values are entered here you need to ask the webhoster.