Encrypt emails?

Your best bet would be a plugin called WP Mail SMTP, though it’s only marked as being compatible as of WP 3.2.1 (but it should reasonably work with WP 3.3.1).

Just to define the process …

  1. Visitor enters site and fills out form on your page.
  2. User submits the form, which is transmitted to your server via a secure connection (HTTPS).
  3. Your server packages the submitted form data and sends it in an email to another location.

Step #3 is where you need some added security. By default WP uses mail() to send messages. But the plugin I mentioned above overrides this and allows you to send messages using SMTP. It further allows you to specify SSL/TLS encryption.

I can’t guarantee this will stand up to a HIPPA security audit, it’s your responsibility to conduct the due diligence there. But if you want to be sure submitted data is encrypted and secure from the time the browser submits the data to when it appears in your inbox, this is your best off-the-shelf bet.

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