More than a decade ago I was included in one of these. It wasn’t work related per se, but the address list included a lot of experienced, BTDT, names-on-RFCs technology folks.
Yeah, even they got stuck in the mess of replying all, unsubscribing, lecturing people about not replying to all. It was a mess, but funny given the names involved. #neverdothis #noreplytoall
I 
received a message on our 800 number. “This is Mark from a-website.example. Your customers are complaining to me that they are not getting my mail. And you’re blocking mail from me. Explain this to me!”
I called him back and left a message: “I think you’re confused and I probably can’t help you.”
A few minutes later, Mark returns my call.
L: Hi, this is laura.
M: Who are you? You called me, you must be from Clearwire!
L: No, I’m not with Clearwire, I’m with WttW.
M: Then why is your phone number on the Clearwire website?
L: I don’t know, but this isn’t Clearwire. The Clearwire website is redirecting to Sprint. They got bought out a while ago.
M: Redirecting to Sprint? What does that mean? Your phone number is on Clearwire’s website. You must be with Clearwire.
L: No, really, I’m not.
M: Why is your phone number on their website?
L: I don’t know. But this is not Clearwire. (I start searching the blog because I remember some post somewhere about Clearwire.)
M: Well, who are you?
L: I run a delivery consulting firm. Is it possible you found my website and the blog post that says all clearwire.net addresses are being discontinued April 15, 2015?
M: They’re gone?
L: Yes, for more than a year now.
M: Oh.
scene
That blog post is the #1 google hit if you search for clearwire.net.
Dear Laura,
We are having a bit of an internal struggle on our end as we launch our new quarterly account summaries. What are your views on including an unsubscribe link in these emails?
My personal opinion is that we should. Although the summaries can be classified as “transactional”, they are not tied to a specific recent transaction a customer made and can be viewed as a general reminder to shop again. As I gathered data to present my case, I reviewed several different account summaries and I found it split close to 50/50. Do you have any data or thoughts to support one way or another?
Thanks,
Summary Judgement
