You Kinda Can Use Custom Fonts in HTML Emails

And you use them pretty much just like you'd use custom fonts on a website. Jaina Mistry had the scoop on this last year over on the Litmus blog:

While web fonts don't have universal support, here are the email clients where they are supported:

• AOL Mail
• Native Android mail app (not Gmail app)
• Apple Mail
• iOS Mail
• Outlook 2000
• Outlook.com app

Aside from using a JavaScript font loader, which definitely won't work in email (no email client will be …

You Kinda Can Use Custom Fonts in HTML Emails is a post from CSS-Tricks