Ever get an email that simpy says "see below," or something similar, and has several more emails attached below? It's then left up to you to sort through all the previous emails and ferret out the point. This has multiple glaring pitfalls. First, it is communication by hint, and that leads to miscommunication. Second, it devalues the time of the recipient since they have to spend their time figuring out what the sender wants them to glean from the chain of messages. Third, it's basically rude in that it essentially says the the sender's time is more valuable than the recipient's.
Instead of writing "see below," take the time to tell the recipient what you want to communicate from the email chain, or at least point out the specific passage(s) you want them to focus on. That will then give them the option of reading through the entire chain at their discretion to find context or other meaning. And it shows that the sender respects the recipient's time.