All Lower Case Preferred Over ALL CAPS in Business Email?

Today is a quickie about a topic I cannot believe I still receive push-back on. Keep in mind, we are discussing business emails. Emails that reflect on your brand. Not personal emails between you and your BFFs.
Ready? Here We Go.
There is no reason not to capitalize sentences appropriately and communicate as an educated professional in your business emails. Email perception is a reality for your business—a fact you must take very seriously when building a successful brand.
I see from the emails I receive regularly that not everyone agrees with this methodology. One, in particular, did have a suggestion to highlight.
If it were one versus the other, yes, lowercase is better than uppercase. But that is when you are physically handicapped, not because you are lazy.
Thou protest too much? You are correct; the meanings of words don’t change. But the perception of you as a polished, educated professional may.
In business, perception matters. Professionalism matters. Reflecting that you can communicate with proper case, structure, and grammar is imperative to building trust.
I’m surprised we are still discussing this in 2026.
Hitting the shift key requires minimal effort. But, again, unless you are handicapped, not hitting the shift key is the epitome of laziness. Those who are not proficient typers may find having to hit the shift key a PIA, but in the long run, you will be taken more seriously and viewed more professionally by making this minuscule effort.
For those unable to use the shift key for physical reasons, simply add a little note as part of your signature file at the bottom of every email. For example:
Sincerely,
Jane DoeP.S. Please excuse my typing in all lower case. My arthritis is such that hitting the shift key is unbearable. Thank you for your understanding…
Professionals are Professionals. Always.
As all serious business people know, communicating why you do certain things can make all the difference in how your actions, or lack thereof, will be perceived. Recipients will not view you as lazy or unprofessional if you are in pain. But that is the rare exception, not the rule (or an excuse.)
Regarding business communications, not taking the time to communicate appropriately shouldn’t include an excuse, nor should it be an option. Can anyone tell me an acceptable scenario where you would not use proper sentence structure and case in your business email communications?
Communicating professionally is a key to your success—no excuses accepted.

