Use SMTP client to bypass Freshdesk API costs

[leviem1]

When using the Freshdesk API for our contact form, we didn't realize it was a trial-only feature. The API allowed us more control over our workflow, however, since we treat emailed questions the same as form entries, we can instead submit tickets using an SMTP client as an alternative. To implement this, we should do the following:

1. Create bot email user
2. Revert 13bd235
3. Update contact.php to work with new user credentials

[leviem1]

This solution will not work. Freshdesk reads the SMTP sent address and not the envelope to header. Will need to switch to SalesForce.