<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<body>
<center><img src="cid:logo.png"/></center><br/>
Hello {{name}}!
</body>
</html>require 'postmark'
your_api_token = 'xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx'
client = Postmark::ApiClient.new(your_api_token)
client.deliver_with_template(from: 'test@wildbit.com',
to: 'test@wildbit.com',
attachments: [{name: 'logo.png',
content: [File.read('logo.png')].pack('m'),
content_type: 'image/png',
content_id: 'cid:logo.png'}],
template_id: 3157881,
template_model: {
name: 'Chris'
})