My company uses long and short emails, where the short emails are (most often)
<initials>@<domain> and the long emails are
<first name>(.<middle name>).<surname>@<domain>.
I have a colleague who has the same initials as I do, but a different short email. He works in a different part of the organization, working with subjects I may possess little, or maybe some peripheral knowledge of. He enrolls my email to a lot of mailing lists, and sometimes with some sales people writing mails to me, trying to promote items.
My actions so far
I contacted him and asked him if I should forward them to him, or inform him that they were writing to my email trying to contact him, to which he answered "No. Just forward them if it seems important." Since then I have clicked many unsubscribe links. But it keeps happening.
I want to stress that I currently do not believe that he is doing it purposefully. The thought that he uses my email when he has to get something free has crossed my mind, but I choose to be optimistic that he is not doing it on purpose.
My thoughts on a solution
I have considered setting up an outlook filter to move mails addressed to him to a sub folder, but that is not feasible, because 1. I may catch something that is actually of importance to me where someone with the same first name as him is in the correspondence and 2. not all the newsletters include names (leading me to think "did I subscribe to this").
I don't think contacting him again is going to help much (since he seems to think his time is more precious than mine), and I don't think this warrants escalation to my manager/HR as of yet.
What other avenues of tackling this are there? Should I set up a template and forward each mail with a "please remember to use your own email" message? or Should I just accept that this is not going to change and keep unsubscribing?
The reason I write is that apparently some of those mailing lists only "pretend" to unsubscribe me, but keep spamming me. I am very conscious that data miners would try to guess emails, and I double check all links to ensure that I am not clicking spearphishing links.
I have considered informing my immediate manager of this as a "potential conflict" so that he is aware, if I for some reason unintentionally piss off
Regarding reassignment: I was assigned this email in 2002, and it was reserved even through a many year absence, until I was re-hired, and reassigned the same email. We have a LOT of systems where I use just the three letters (which are by chance my initials) to log in. I doubt they would reassign a new short email to me - they don't do it for people changing surnames either ( the long email does change though).