This is unrelated to any mailing-list change, since both were sent from/to the 10991049.xt.local mailing list.
Search for the header entry `List-ID: <10991049.xt.local>` in your Sep 4 email. If it came from that list, the one from Aug 25 will very likely have been lost during transit.
I use their products in the 10-user license program since 2016 and got automatically subscribed to their mailing list back then, and never made some change to the subscription. I'm receiving emails from that list since 2020-10-17.
On the 2020-07-10 I got a mail from them telling me:
```
Subject: Please double-check your contact details for Atlassian
Making sure you don't miss important emails
Hi,
When you purchased your Atlassian products, we asked for the contact information for two types of people in your organization:
Billing contact - A person we contact with invoice and billing information
Technical contact - A person we contact about product changes, security advisories, etc.
We don't want your company to miss out on important information from Atlassian, so please take a minute to make sure your contact information is current. Here's what we have in our system:
```
Once I noticed I did not get an email, on Sep 3, I checked some checkboxes at https://my.atlassian.com/email But that page also says tech contacts should always receive an email regardless of settings. I have received other security announcements in the past.
Office 365 can't find any emails from Atlassian on Aug 25 when searching using the Message trace tool (which also includes any spam mails, deleted mails, et cetera), so I would suggest Atlassian fix their mailing list.
I’ve always found government, sensitive customers (banks, payment processors, healthcare) and big spenders get prioritised with phone call notifications.
However with a deprecated product, the financial impact is so minuscule - leadership won’t prioritise this one unless you’re big fish.
The only companies that are like those companies are those companies.
In most companies, the CS people don't know what anything in that sort of alert means and will discard it thinking that it's a spam or phishing attempt.
The problem is not that he doesn't work for a megacorp. The problem is that Atlassian screwed up.
I think you're reading it as saying that the helpdesk people ("customer support"?) at a large organization like Amazon, Microsoft, or Salesforce would be trained to recognize a mis-directed email from a vendor and send it to the right place, but I don't think that's the claim being made.
