CRATE&BARREL — Deals of the Week: Wine & Dine up to 25% off. Free Shipping details…
Recommended subject line length can go anywhere from 50 to 60 characters. A two year study from 2008 mentions that promotional subjects should stick to 50 characters. And that it’s okay for newsletters to stretch to 80 characters. This one hits 70 characters.
Also avoid “Percent off”, “Help” and “Reminder” in your subject lines. Mailchimp’s research show negative open rates with one of those words in subject lines.
Aside from that, Crate&Barrel take it to the extreme with this four column email. The content table’s width is about 700px and it shows that four columns can be achieved in html email.