Rendering emails with handlebars in node.js

Question

I am writing application using Nodejs/express/hbs/handlebars.

I try to send e-mails to user, after purchase, with receipt. It should be just simple text message, with invoice entries and total value.

Sending email works well, and I can render simple values like {{buyers_email}}, but when comes to using {{#each }} ... {{/each}} - it doesn't render it, it just prints it literally to email's content.

It is even weirder, because in normal pages (like index.hbs), the {#each} is used, and it works well.

Here goes the code:

server.coffee

  sendReceipt = (buyers_email) ->
    products =  [
      { name: 'Product1', name: 'Joan' }
      { name: 'Product2', name: 'Cesar' }
    ]
    mailer.send
      host: xxx
      port: xxx
      authentication: 'login'
      username: xxx
      password: xxx
      domain:xxx
      from: xxx
      to: buyers_email
      subject: xxx
      template: 'views/email-receipt.hbs'
      data:
        products: products
        some_key: "some value"
    , (err)-> {}

email-receipt.hbs

<p>{{some_key}}</p>
{{#each products}}
  <p>product</p>
{{/each}}

and the result is:

some_value 
{{#each products}} product {{/each}}

What can cause such a behaviour?