i am no fan of spam. but i am totally fine (and expect, really) to receive email #s 1, 3, 4, 6, 7, and 8 on this 10 point list.

- 1 confirms my order was received, and im not left thinking i ordered something when it wasnt processed.

- 3, 4, 6, 7 are all good for ensuring my order didnt get lost in the process and lets me schedule my day if needed.

- proof of delivery (8) is good for records, disputes, or just knowing that i should pop over to my house on lunch so the item isnt sitting outside all day.

however, i do use my own domain and unique addresses per store (e.g. "walmart@example.com" if i need a walmart account for whatever reason), so that if/when companies start doing the "we miss you", "please rate us", "seriously, please rate us, you havent yet :(" or whatever, i can immediately bin it.

catchall is also super convenient for automatically organizing emails. anything with a "to" address of "walmart@example.com" goes straight into the "walmart" folder.