The term "s-mails" refers to emails that are short and easy to read. If you're looking for synonyms for this word, you might consider using "brief emails," "concise emails," "succinct emails," or "to-the-point emails." Other options include "focused emails," "pithy emails," "abridged emails," or "terse emails." No matter which synonym you choose, the idea is the same: s-mails or short emails that get straight to the point and help you communicate more efficiently. Using clear and concise language is an effective way to grab the recipient's attention and make sure they understand your message.