I have been helping this person with some stuff (related to technical work) often even though I don't have any stakes in it. Sometimes it is via chat or on call and I have spend reasonable time on it. The person is at a higher position(3 levels above) than me.
Of course, the idea behind it is to show that I am going out of my way in helping other teams/people.
To add more context, my previous boss in the same organization once told me that try to get some appreciation mails for all the support you provide to other teams. It helps during annual review.
Is it proper for me to ask for an appreciation email from him for all the help I've extended? If yes, then how should I phrase it so that I do not come off as selfish or otherwise inappropriate.
Edit- Couple of things here.
- The person I'm helping is at the same level as my boss but for a different team. I'm helping with technical stuff which I usually do for my team.
- Another interesting thing is I am helping him on an unofficial basis;helping on technical things which he doesn't know and supposedly no one in his team(perhaps that is why he asked my help for around a dozen times). That person has thanked me multiple times and the thing is my boss doesn't know all this. I am not sure if he will ever get to know.So after the umpteenth instance I thought of asking for a small email or something.
If it is not proper to ask for an appreciation email then maybe I should draw a line as to how much support/help I can give unofficially. But that is tricky in itself - afterall he is at a much higher position.
Edit #2 -
As suggested by the answers I requested the person last week and haven't heard back since then. :-) Either he forgot or got pissed off or sent a secret mail to my boss.