Before you share your publication, make sure you publish the publication.
Every publication is like a website and has its own web page/URL. You can find the URL of your publication in your dashboard. Just add a link to this URL in your email (e.g. by adding a hyperlink to specific text or image in your email newsletter). When your customers click on this link, the publication will open automatically in a new browser screen.
If you want the publication to open at a specific page, add '/#' behind the publication URL, with '#' being the page number. For example, if you want your publication to open at page 10, you add /10 at the end of the publication URL.