How To Stop Getting Mails For Donations?

Hello ILs,

I am pretty sure some of you might be facing this same problem & may have some solutions. We are not very philanthropic or anything, but somehow, we have been getting too many mails from all types of non-profits for donations in the last year or so. I am not sure where they source their mail lists from (getting name & address info) to solicit donations. We maybe making some donations through employers but other than that no active / regular contributions to any non-profits or similar. We get two mails from each non-profit org which tells me they probably get the address info from some community source (since the house is in both our names) or do they send it to everyone possible??

But, I am too tired of tearing off these mails and also feeling guilty for not contributing. Some come with advance gifts like gloves, coins , name & address labels,calendars, stickers etc. It's almost like a mental / emotional blackmail since you are receiving something from them in advance, so you better contribute!

Pls suggest any ways to stop getting such mails or maybe stop sharing our info (but I am not sure how they get their mail lists in the first place). Your ideas are appreciated as always.

Thank you!