How can I export a sent email or draft email as an HTML File?

Site URL: http://sungarden.us

Hi all,

We're paying a magazine to email to their readers and I made an email in our Squarespace email account. The magazine is asking for an HTMl version of it. I contacted Squarespace support and it's not an option right now. If anyone knows a work around that would be much appreciated. I'm thinking if maybe I send the email out to my gmail and try to same it as HTML there? Thanks