There is someone who sends me emails who puts all the content in the subject. Which doesn’t fit in the Subject field of the summary list of emails so I have to open it anyway to see what it says.
Why do people do this?
I have gotten subject-only emails that are short and sweet, which I don’t mind, like
Your car is ready
or sometimes
Lunch is here
But I’m talking about
Performance for September 12th at 3:30pm. Please let me know if this date works for you, and if not provide two alternates
Are they sending you emails via a txt message on their phone? I’ve seen that done. With the results you describe. Voice to typing is another likely candidate for the process that gets them doing this stupidity unwittingly.
You could try the passive-aggressive approach of setting a rule to delete all emails from that sender. Or at least all emails with blank bodies. Then plead ignorance when they come at you via other channels asking why they got no response.
They are not texts. They are sent on behalf of a business and the person has an elaborate email signature including graphics. I am betting these are sent from a desktop computer.
I can’t delete them, it’s a customer. If they get no response, they will not come via other channels. I lose gigs.
Time for some peer counseling for them about proper use of email. Or some Zen counseling for yourself about accepting the abject raging moronicity of your fellow humans with good grace and no elevated blood pressure.
The third option is "He/she needed shootin’ ", but I doubt you live in Texas. 
Good luck. Seriously, not snarkily. I feel your pain; I truly do. I once worked with folks like that.
It’s a peeve of mine as well. Also when there’s some information in both the body and the subject line that I must put two and two together to get the complete message. Just put the most important stuff in the body, that’s where I’m looking.
I’d try responding to each one of these messages with a politely worded response “Hey, all I got was header and signature and no content in your message, send again please?” And truncate the original subject line to some fixed number of characters as if your own system ate that part.
I’d much rather have this than the opposite - which is a completely useless Subject line. Such as “Issue”, “Tag”, or “Report”
Nevermind..
This. I want the info repeated in the body, but i like a descriptive subject.
If it’s hard for you to read, how about replying saying, “hey, my email client only shows the first n characters of the subject line, could you please repeat anything i need to see in the body of the email”
People can’t fix problems if they don’t know the problems exist. Make it easy for him to communicate better with you.
The best way is an extra “email processing fee”. You can roll the price increase into an existing fee, so they just think it’s due to tariffs or something, but you’ll know what it’s really for.
Again, the answer to “why do people do this” is that people interact with email differently. There are a lot of people who only read the subject unless it’s an especially interesting subject and they expect a lot more detail within.
So tell him this doesn’t work for you. Don’t be passive aggressive, or aggressive-aggressive. Try to solve the problem. Ask him to copy the subject line into the body of the email, and explain that that will make it easier for you to read it.
He’ll probably do it most of the time, and forget sometimes. But don’t change extra fees or let it drive you nuts until you’ve at least given him a chance to accommodate your preferences.
This is the only way, since all of us behave moronically some of the time, given the number of humans on earth you are absolutely guaranteed to meet infuriating moronicity several times a day/week/month (depending on your threshold for “infuriating”), so the options are violence or acceptance. And violence is the last resort of the incompetent.
Agree. Much better to have too much info in the email title than too little.
When I was in IT, we would sometimes get emails to the Help Desk that were like this. “Dear Helpdesk, my monitor isn’t working, it is totally dark now and was fuzzy on Friday. Please replace, thank you.”
If I was feeling a bit spicy, I would put my whole answer in the subject line. In my defense, I only did that a few times. I agree, it’s very obnoxious when the subject line gets too long. I don’t see it anymore though.
You find it frustrating to have to click through to the full message to read what it’s about, and you’d prefer that the subject was short so you could click through to the full message to read what it’s about. Is that what you’re saying?
That doesn’t bother me, but. . .
Any email that arrives with a blank subject line is DOA.
I accidentally sent one of these recently. I was on my phone, and didn’t notice what field I was typing in. I’m sure it was annoying, but it wasn’t intentional.
There’s a chain of 8 emails with no subject (all replies to the first one) in my email right now. I’ve contributed two of them, and sadly, didn’t notice to add a subject at the point where i could have.
I’m in a roundtable group that meets once a month, with a new topic each month. The secretary sends out a monthly announcement email with the subject something like Next meeting. Then the entirety of the body is a fricking PDF file as an attachment, which when you open it tells you the date and the next topic. Why a PDF file? Who knows. Just put the info in the body, so I don’t have to open the PDF viewer. Heck, I’d be satisfied if it was in the subject line too.
God I’m glad I’m retired. I can feel my blood pressure rising as I’m thinking about getting that email, or dealing with re-educating the sender.