It is proper Netiquette to be concise. Don’t write long messages.
Short Message Netiquette For Email
Many people do not read an entire email message for various reasons. The internet demands immediacy. Some users do not read entire email messages because they are delivered to their smartphones others may not think they have time to read an entire message.
Email Short Messages
Whatever the reason, many users do not read an entire email message, so it’s good netiquette to compose short messages.
Short Message Netiquette
Write short messages because people do not read an entire message when it is long.