Last week a client of ours at CHROMATIC requested an addition to the default contact form that ships with Drupal. Essentially, they just wanted to add a required “Phone Number” text field to the form. Additionally, they wanted this value to be sent along with the email that the contact module sends. One solution would have been to ditch the contact.module and just whip up a new page using the WebForm module. The other solution is to override both the form/email using the following hooks respectively in our own module:

• hook_form_alter()
• hook_mail_alter()