email marketing = mobile marketing

We consume email via phones.  We now conduct commerce via phones.  As marketers, we need to be aware of this.
It's great to find validation from Wired, Forbes & the like, but it's also useful to gain insight from smart people who specialize.  A piece by Carrie Hill [KeyRelevance] has truly interesting details:

• In the first six months of 2012, 36 percent of emails sent were opened on a mobile device – a 32 percent increase over the last half of 2011, when 27 percent of sent emails were opened via a mobile device. 
• It's estimated that nearly 26 percent of email is accessed via mobile phones….Most mobile phone users with purchasing power now have smartphones. 
• She recommends: (a) optimize your images to be mobile friendly; and (b) put a link to a version of your blast at the very top and make sure it's left justified. 

See the full piece, including helpful displays, here:
http://searchenginewatch.com/article/2206124/Email-Marketing-the-New-Mobile-Marketing