I had read the question many times and do not understand what you are asking.  

Looking at other responses it appears you may be asking if we think submitting a buyer's letter with their offer improves their chances of getting their offer accepted in a multiple offer situation.

It depends.  I've seen it work when the offer was not the highest and best. 

No, it opens the door to potential litigation, especially when the home buyers behind the letter do not receive acceptance!

Nope. Many listing agents will not include letters in their presentations. Discrimination risks must be considered.

This makes no sense.

As a listing agent, the letter is worthless. I like facts. We look at price, closing date, contingencies, anything the buyer is asking for and what type of mortgage they are using. I lay out to my seller best price but then best terms. No contingencies can be better than a higher priced offer loaded with them. 

I have had several sellers who've sold recently under multiple-offer conditions.  And some of the offers came in with those treacly sweet letters:

"Dear Mr. Seller, we can see how lovingly your home was cared for, and are hoping to raise our family here... blah, blah, blah..."

And damned if they didn't help tip the balance in their favour.  I don't suggest them, but if the potential buyer wants to write one, I'm not going to try to convince them otherwise.

Are you talking about an escalation clause?

The power in this approach lies in the people or persons sending such a letter and believing it will help. Remember: It is done to you as you believe. Whether the receiver believes is another matter...

I'm not sure I'm understanding your question.  Are you talking about being in a multiple offer situation and having a letter written by you or buyer to the seller ? If that's what you are asking then yes, it MAY.   Obviously, it depends on many factors.  Here's a link on what I do to win in a multiple offer situation: https://activerain.com/blogsview/5095770/some-tips-to-get-your-offer-accepted-in-a-multiple-offer-environment

No

With Every Offer!

Why?

They do work more than they don't! I've seen them work on my sellers too.

Many agents are ignorant to how to draft them, so they'll say things like "discrimination" or other negative reasons that support their fears and or laziness.

Look if you can't write a letter of introduction about your clients to the seller without being discriminatory, by all means don't write one.

But, if you have common sense and some experience with writing them, do. They work more than they don't.

Hell, I still present in person given the opportunity and that is all about talking up your clients tot he seller.

A couple of months ago, my daughter made an offer on a property that had 5 offers.  I suggested that she go over full price.  She did and got the house.

Just this week I met an agent that had a buyer bid on the same house( at the same time my daughter bid)...the other agents buyer offered full price plus  a "love letter" and the agent told me that they were sure they were going to get the house. Obviously they did not get the house...

I have never written a love letter for a client...I try to make the offer as clean as possible.

My experience is that the price and terms beat any "love letter".

Eve

No, never. Will read answers.

I listed a house...multiple offers...one had a buyer letter saying how they were expecting their first child and were looking forward to raising their family in the new home...copy of sonogram was included.

Seller would not even look at the letter of attachment. It was a short sale and sellers were losing the house they loved.

Any yet, the "sonogram" offer was the best and they got the house.

If the client writes it I submit with offer, but I don't write them.

Never.  That type of letter can be fraught with legal issues  if a buyer that doesn't win the bid stirs up dirt all because they think there were discriminated about OR..................fill in the blank.