We are sending letters to customers who have exceeded the Reg D limits pertaining to deposit accounts. Within the letter, as a matter of courtesy, it says, "The Money Fund is an excellent account to earn interest and at the same time have access to your funds." Is there any problem with using the word "excellent" since it may be potentially undefendable and/or misleading?

I may be overly picky, but if The Money Fund is the account that they are mishandling, I would refrain from saying it is an excellent account for them.

IMO, words like "excellent" or "great" are generally OK. What might bring criticism or the need to defend is saying things like "the best", "lowest" loan rates, "highest" deposit rates, etc.

I agree with Kathleen, it may not be the best to say since it is the account they mishandling.

If this is the problem account, perhaps say it can be an excellent....however.....

How about "The Money Fund can be an excellent vehicle by which to earn interest and still have immediate access to your funds--if the account is managed responsibly."

Given today's interest rates, I'd say any adjective accentuating the positive is misleading. Regardless, you can still do it.