What are the BEST practices for "Mobile Email Marketing"?

1. Make sure the email looks good on most hand-held (99%) devices without any distraction like non-useful text, horizontal scroll bars, big fat logos to name only a few
2. Make sure to include a clear call to action that goes straight to the point, make sure it's above the fold
3. Make sure the landing page as well is optimized for mobiles and it's a continuity of the email that led to it
4. General advice: send the right message to the right audience and always remember that you have only a few seconds to build interest in what you are offering no matter how  good it is.

I always talk about design when it comes to email marketing in general. 

1) Design defines a good user experience.

2) The span of attention on mobile is literally under2 minutes per message on mobile.

For example take group buying/ coupon sites for example. I have yet to see email newsletters that show me a full campaign in a single view without having to scroll down to read the full text.

Good Day!!!

To my opinion, one should craft his email in a way that a consumer easily understands a few things from it:

Who sent the mail?

What is the promotion?

What is the message?

What is the offer?

Otherwise your email will be skipped or deleted.