To: $email
Subject: $subject
Mime-Version: 1.0
Content-Type: multipart/related;boundary="nfcoremimeboundary"

--nfcoremimeboundary
Content-Type: text/html; charset=utf-8

$email_html

--nfcoremimeboundary
Content-Type: image/png;name="nf-core-imcyto_logo.png"
Content-Transfer-Encoding: base64
Content-ID: <nfcorepipelinelogo>
Content-Disposition: inline; filename="nf-core-imcyto_logo.png"

<% out << new File("$baseDir/assets/nf-core-imcyto_logo.png").
  bytes.
  encodeBase64().
  toString().
  tokenize( '\n' )*.
  toList()*.
  collate( 76 )*.
  collect { it.join() }.
  flatten().
  join( '\n' ) %>

--nfcoremimeboundary--
