I'm looking for an expression that is used when you have a lot to tell about a specific matter but you will say only a short summary, usually due to courteousness towards the conversation partner, e.g. I am writing someone an email stating something. I have sent him multiple emails before regarding the same subject. So the email will go something like this:
I will not repeat here the points I stated in my previous emails. I will _______ with saying ...
I also believe the general form for the expression is "I will _______ with saying ...", where ______ means something like being content with.