Walmart sends text messages when you order. Amazon does not.
I order more from Amazon than Walmart.
Amazon does but, you must turn that feature on.
I hate too many emails but Walmart also unsubscribes you when you click the link for doing so. If it were only that easy to get rid of all the political emails after one has donated a time or two.... they add up to over 35 a day now but my spam filter keeps the inbox relatively clean.
I lived on Amazon Prime delivery for years. Gave it up a few months ago and found there were enough options out there so I don’t really miss it.