Is it possible to embed another webpage (like an html email) in a SharePoint page?

I've received an email from one of our partners for webinar training. It has text, links, and images, and it includes a link to view the email in a web browser. I'd like to post / host this on our SharePoint site to share with the entire company. 

I've managed to copy the HTML and I found an iFrame converter to use the Embed element on a SharePoint page. After adjusting the height and width, this appears alright in my web browser. But when I view the page on my phone it crops the Embed element.  Changing 'Resize To Fit' doesn't seem to help. So, it seems to me that there should be a better way to accomplish this.