[TYPO3-english] Formhandler: no email is sent

[Lamb, Brian]

Hi all, 

I am using the following typoscript to set up formhandler:

# configure the mailing extension
plugin.Tx_Formhandler.settings {
  langFile.1 = TEXT
  langFile.1.value = fileadmin/template/main/scripts/xml/lang.xml
  
  templateFile = TEXT
  templateFile.value = fileadmin/template/main/html_forms/contact_us.html
  
  errorListTemplate {
    totalWrap = <p class="error_message">The following errors occurred: </p><ul class="error_message">|</ul>
    singleWrap = <li>|</li>
  }

  validators.1.class = Validator_Default
  validators.1.config.fieldConf {
    subject {
      errorCheck.1 = required
    }
    first_name {
      errorCheck.1 = required
    }
    last_name {
      errorCheck.1 = required
    }
    email {
      errorCheck.1 = required
      errorCheck.2 = email
    }
    message {
      errorCheck.1 = required
    }
    recaptcha_challenge_field {
      errorCheck.1 = jmRecaptcha
    }
  }
  finishers.1.class = Finisher_Mail
  finishers.1.config {
    admin {
      templateFile = TEXT
      templateFile.value = fileadmin/template/main/html_forms/email.html
      to_email = myemail at mydomain.com
      sender_email = email
      subject = subject
    }
  }
  finishers.2.class = Finisher_Redirect
  finishers.2.config.redirectPage = 179
}

And the form will correctly submit but no email is sent to my email address. What am I doing incorrectly?