Backup mails to cloud

<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><style> body { font-family: "Calibri","Slate Pro",sans-serif,"sans-serif"; color:#262626 }</style> </head> <body lang="en-GB" style=""><div>Hello I would like to ask if it is possible to automatically backup mails sent/received by postfix to cloud storage services like Google cloud storage, amazon s3, rackspace cloud files (or other openstack swift compatible cloud)?</div><div><br></div><div>Anvar&nbsp;Kuchkartaev&nbsp;<br> ... at anvartay dot com&nbsp;</div></body></html>