Use Publish online from InDesign CC 2015.1 and copy the link into the e-mail. Not every email client will support it.
You're wasting your time with InDesign for this - yes you can get an agreed layout in InDesign.
But everyone uses different email clients, such as Outlook, Thunderbird, FirstClass, Gmail, Yahoo, etc. etc. etc.
Then there's mobile phones, tablets and system email clients.
You should use a service like MailChimp - Constant Contact - Campaign Mointor : to name a few.
You can then rebuild your layout in these programs and send - they also serve to offer how many times links were clicked on and many other features like that.
Yes that's what i'm looking at now - trouble is the structure (already agreed) will have to be completely changed.
Just wondered if there was a way of importing what i've done to a similar programme?