Answer: 5 essential things need to be considered while sending a mail in a business setting.
(I) A concise and direct subject line
(II) A proper greeting
(III) Proper grammar and correct spellings
(IV) Only essential information
(V) Clear closing
Explanation:
A Concise, Direct Subject Line
Every email you send for business should have a succinct yet descriptive subject line. This will help recipients determine its importance.
A Proper Greeting
Greeting helps people to determine to whom a message is directed, especially as cc'ing and replying to all have become common. It's good to avoid replying to all unless everyone on the email chain really needs to read your reply. The same is applicable to cc'ing too many people on a single email. It's good to be selective with one's information, as most folks are dealing with overloaded inboxes.
Proper Grammar, Correct Spelling
Abbreviations are not welcomed in business mail. Even if your coworkers and clients don't call you out on your use of such shortcuts, avoid using them. An email could get forwarded to another client or a supervisor who may be appalled at your seeming lack of written communication skills.
Only Essential Information
It's fine to be friendly and a bit familiar in business emails; however, try not to be too chatty. Notwithstanding vital information should be your utmost priority to ensure that your recipient actually reads it. If your messages run longer than a paragraph or two, they may not get read in their entirety.
A Clear Closing
Conclude your email in a way that it's clear what you're also expecting from the recipient and when. If you aren't specific, you probably won't get the response or action you need.
Conclusively, only use return receipts when sending a critical message that requires you to know when a message has been received and read; it's an invasive tool that could rub colleagues the wrong way.
