Research has shown that almost 80% of smartphone owners use their device for email, and that they are more likely to check their email on their phones rather than make a call. If you're not optimizing your emails for mobile devices, you're missing out on a huge opportunity to impress your calls-to-action on mobile users.

Follow these guidelines to make sure your emails are easy to read on a mobile device:

• Keep the subject line short
• Use a simple, stacked layout
  
• Make sure the width is 600 pixels or less
• Use a font size of 12 or higher for the small screens (Apple devices automatically resize text to 13 pixels)
  
• Make buttons and links large and “tappable” so they're easy to click
  
• Use a plain text phone number or a click-to-call button so calls can be made easily
  
• Always include a plain-text version of the email (which is often automatically generated by email marketing services)

Marketing Bites are short actionable tips to help you market your business. Each Bite contains a marketing idea and an easy to complete action. The Marketing Bite is emailed weekly to subscribers.