Sending
Contact Form 7 uses the standard recommended methods used to send emails in WordPress. If you are unable to send emails from the CF7 plugin, it is likely that you are unable to send emails from WordPress in general.
The following list contains items that we have found commonly lead to email sending problems with the CF7 plugin (and WordPress in general). We suggest that people work through this list from top to bottom to try to solve their particular email sending issue.