I'm planning to consult a potential future advisor for a postdoc position. However, they do not put up any advertisement for postdocs, thus there is a large possibility that they cannot afford a postdoc. However, even if they cannot afford any postdocs, I still prefer them to read my email, as our work are close in some degree and I do not wanna lose the opportunity for them to point me to someone else. For this reason, is it a good idea to not mentioning postdoc position upfront in the subject and only mention it much later in the body of the email?
Consider a title such as: Postdoc on [subject]
I am PhD student / postdoc working with/at/on institute/advisor/subject (whichever you judge would interest the advisor). I am interested in your work on [subject] and maybe mention a particularly interesting article. Would you happen to have open postdoc positions or other funding options I could pursue?
I attached my CV and here is a link to a related publication of mine that I am proud of, or my homepage etc.
Maybe mention a concrete research idea here, if you have one.
I would not expect the potential advisor to work as a recruitment service, but if they answer positively but do not have positions open, you might ask if they know someone working on related subjects who could hire you.
Also, if you are willing to co-operate even without, or before, getting the position, you might want to mention that and maybe even add it to the subject.