On Fri 25/Aug/2023 17:36:06 +0200 Chris Adams via mailop wrote:
Once upon a time, Jaroslaw Rafa <r...@rafa.eu.org> said:
Dnia 25.08.2023 o godz. 09:48:35 Chris Adams via mailop pisze:

So even for transactional messages, there's usually an account making the purchase, or something is being delivered to an address, or the like. So a "this is not me" link should be able to note that (a) don't send more mail about the current transaction to this address and (b) don't send any mail for future transactions with the same delivery to the same address without further input. Future orders that would have transactional emails blocked should pop up and say "hey, this address is flagged as NOT YOU, are you sure?".

This does not solve the problem of one-time purchases WITHOUT an account (actually may be multiple "one-time" purchases, but without registering an account at the shop and logging in).

"or something is being delivered to an address"

One of the things that prompted me to send the initial message here is DoorDash delivering food to the same person. In that case, it appears they made an account, but even if they didn't, it's probably going to the same place. So "delivery address+email" is a unique identifier.


If you have an unsub button —which some suggest be /always/ set in automated mails— you should store unsubbed addresses whether they have an account or not. So Chris' solution is good for all cases. Re-entering an unsubbed address should trigger extra checks, COI or whatever.


Best
Ale
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