Keep your boss informed about things that you know he or she wishes to be informed about. Exactly what those things are depends upon what your job is, and how your boss thinks about it. It varies a lot.
The only time you should "Cc" your boss on an e-mail without his or her specific request is when special request is when special circumstances call for it
Yes, if the matter is something important that requires his or her attention. For example, if you are sending out an email of reprimand to a subordinate, it would be a smart idea to cover your bases and CC your boss in case anything becomes misconstrued.
There is one funny episode where chandler is having difficulty explaining to his boss that his "butt patting" is not appropriate. I'm not sure if this is the one your are asking about, but its a pretty funny episode.
you are not boss at all so stop asking
How do you write a letter to boss asking advance for travelling
It is NOT appropriate.
No. He Can Not. I Know. I Had A Boss Like That And He Did It SO Much That I Quit.
I'm not really sure weekly flower delivery is appropriate for your boss. That may look a little strange. Maybe just on boss' day or their birthday if you really want to do something.
I think it is unethical to edit an email and resend under the original sender's name, however I cannot determine if it was illegal. Case in point, send boss an email; boss removes a paragraph of email and forwards email to another company with my signature.
Hellz no
Any initial discussions with your boss should be done verbally. There's a lot to be said for a face to face or in these pandemic times a Zoom call. It's a great way to put a framework to a task or pull together brainstorming ideas and address quick queries. Updating your boss about the outcome or conclusion of a work assignment set by them is reasonable and a useful way to ensure you have a 'paper trail' of how things went, should you need it later.
The best way to notify your boss you have made a big sale is to use professional language within the email. However, you can still display some excitement and ask your boss how you should proceed.