Learn English – “Count on” and “Count with” usages

I doubt thanks before is commonly used in this sense. Thanks in advance is frequently used. Here is some data on the matter. If we let Google expand our search for context, notice that thanks in advance has the context we want.

If it is written, then I personally don't think it is rude, since I understand that the author is trying to be polite. If it is spoken, and the speaker says it in a presumptuous manner, then it is really irritating.

However, there are people who will find it rude. They will more likely take it as a presumptuous statement.

I personally say, or write in an email, "Thank you for your consideration". Some other alternatives include:

1. Thank you for your time.
2. I (would) appreciate your/any feedback.
3. I appreciate your consideration.

I found a post online that addresses this matter. The author gives some other alternatives:

4. Thank you for considering my request.
5. I will be grateful for any help you can provide.
6. I will appreciate your help with this situation.
7. I hope you will be able to provide the information.

"Count with me" basically means "Let's count together/at the same time." "Count" is a verb in the imperative tense, and "with me," is a prepositional phrase. You could also say to someone, "Eat with me," meaning, "Let's eat together/at the same time." You could also say to someone, "Skate with me," meaning "Let's skate together/at the same time." You can use this construct with lots of active verbs.

I have never heard someone say in reference to an equation "Yes, I counted with that." If I wanted to communicate that I didn't forget a certain variable in my calculation, I might say, "Yes, I included that," but it would depend on the context.

"Count with me" doesn't mean "Include me in your plan." There's the idiom, "Count me in!" which I think better expresses what you mean to say. "Count me in!" basically means, "I want to be included in what you're doing!"