I'm with you, I love getting long emails with lots of detail but I have colleagues that don't. I'm quick to tell the people sending long emails that get feedback about it that I'm happy to keep receiving them.I sent an email the other day outlining a more official proposal for a piece of work to be done, as requested by both my boss and other teams.
I almost immediately excuse the length of the email, and outline that it is as concise as possible and that further detail can be provided on request, or discussed at meeting.
It's about 900 words if I pasted into Microsoft Word, and 1-2 sides of A4, with a fair bit of spacing. GCSE students have to cope with more in exams. This discusses a change, why it is needed, the problem it fixes, background information and future changes to make things better long term.
The first response to the email from the team that are meant to be reviewing the request, is someone completely missing the point. Like, I am concerned to be having to deal with someone that dumb.
The second response from my boss to me complains of the email being quite lengthy, so is unsure we will be successful.
What annoys me the most, is a meeting will be called to discuss this. I will literally repeat everything that is there in the email. Again.
If I had taken the approach to keep the email to a paragraph, it would have been laughed off passively aggressively referring to a distinct "lack of info".
Can't win. Why are people incapable of reading today?
It's really frustrating getting an email that's missing vital information and means I need to contact them back to request further clarity. It takes way, way more time to do ping-pong or arrange phone calls etc than just including the full picture in the first place.
I have had feedback in the past that my emails can be too verbose, but then I've also had feedback that my written comms are excellent and lay things out clearly. Plus the ABSOLUTE WORST is when you draft an important email, get told to be more concise and then questions come back about the stuff you just bloody truncated! You can't win really. And If I'm emailing someone about a topic that might be new to them, the first couple of lines is going to get used up on explaining who I am and setting the context anyway, before we even get to the actual question / actions at hand.
What I try to do when I know I'm sending a long mail is include a TL;DR / exec summary. Luckily the CxO I sit under is pretty detail-oriented and doesn't mind getting a proper explanation, but I'm conscious some people zone out if they receive more than a couple of paragraphs.