title: Use PHP to create thunderbird emails
body: <p>I have a custom-written mySQL database of users (with PHP/HTML website interface) which I use for billing. I have a number of overdue invoices and would like to email these users to advise overdue state.</p>
  
  <p>I can email users via PHP using PHPmailer etc, but would prefer to have an HTML link which I can click to compose a pre-filled thunderbird email. There are reasons for this including PHP mails being rejected as spam (the biggest server in NZ has seriously weird spam requirements which I cannot reliably get around). There are other reasons I want this done via TBird so please don't suggest <em>not</em> using TBird as a solution!</p>
  
  <p>The mailto link is not reliably an option as I believe browsers have a GET query string  max-length which is too restrictive.</p>
  
  <p>Any other options anyone knows of?</p>