Question: How can I create a contact form that allows you to pick an email address from a select list, and keep the email addresses encrypted?
Answer: You can hard code (or pull in from a query the addresses you want to use) the email address/name option values using PHP to encode the email address.
You’ll need to have PHP turned on for output.
{exp:email:contact_form user_recipients="false"}
<h2>Contact Form</h2>
<?php
global $PREFS;
$init_size = mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_ECB);
$init_vect = mcrypt_create_iv($init_size, MCRYPT_RAND);
$email1 = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5($PREFS->ini('system_folder')), 'person.one@mail.com', MCRYPT_MODE_ECB, $init_vect));
$email2 = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5($PREFS->ini('system_folder')), 'person.two@mail.com', MCRYPT_MODE_ECB, $init_vect));
?>
<select name="recipients" id="recipients">
<option selected="selected">-- Deliver To --</option>
<option value="<?php echo $email1; ?>">Person One</option>
<option value="<?php echo $email2; ?>">Person Two</option>
</select>
<p><label for="from">Your Email:</label><br />
<input type="text" id="from" name="from" size="40" maxlength="35" value="{member_email}" /></p>
<p><label for="subject">Subject:</label><br />
<input type="text" id="subject" name="subject" size="40" value="Contact Form" /></p>
<p><label for="message">Message:</label><br />
<textarea id="message" name="message" rows="18" cols="40">Just a test email.</textarea></p>
<p><input name="submit" type='submit' value='Submit Form' /></p>
{/exp:email:contact_form}