There then ensued a search for how to control the default font type of the outgoing email html. I don't want to have to hand code the source HTML for every communication.
I eventually found how to do it and share it here in the hopes that it will save someone else the long and frustrating search I had to locate something I would have hoped would be easily found online. Not so!
- Locate the file admin/controller/sale/contact.php.
- Go to line 230 in that file. The line reads: $message .= ' <body>' . html_entity_decode($this->request->post['message'], ENT_QUOTES, 'UTF-8') . '</body>' . "\n";
- Change the text: '<body>' to '<body style="font-family: Arial, Helvetica, sans-serif; font-size: 12px; color: #000000;">' .
- Save the file
The full line should read: $message .= ' <body style="font-family: Arial, Helvetica, sans-serif; font-size: 12px; color: #000000;">' . html_entity_decode($this->request->post['message'], ENT_QUOTES, 'UTF-8') . '</body>' . "\n";
Your communications should now be in the font of your choice by default.