I have 4 accounts in the dining for miles programs: American, United, Alaska, and Delta. I primarily use the first 2. All 4 accounts were at the level of 3 miles/$ by agreeing to receive the marketing emails.
I didn't accrue any miles with any programs for about 2 months. I was just awarded 1 mile/$ for a recent dine so I asked if it shouldn't be 3 miles/$. I was told that the marketing emails were undeliverable so my accounts were automatically downgraded.
First I double checked the emails listed in the all the accounts and none had been changed. Also, the marketing email senders' address are all on my 'safe' list.
And when I confirmed all 4 accounts' emails I did in fact receive all 4 confirmation emails in my inbox.
Did the senders' emails change? Although that would merely send the marketing emails to my junk folder, not bounce them back as undeliverable.
Anyone ever have a similar situation?