I have been through my profile and unchecked eveything I can find but I am still receiving unwanted emails from AAC.
The last two were:-
Last Call: Help Shape 2025 Tools & Win
Embedded & Edge Summit Starts in 7 Days

How do I stop this?

I have ticked the 'Newsletter' checkbox ...
"I do not wish to receive any AAC updates (even though they are really interesting weekly emails with cool Projects, Technical Articles & News). "
That made no difference.

The email source is "All About Circuits<updates@allaboutcircuits.com>" That suggests they relate to 'updates'
Is the text against the 'Newsletter' checkbox inverted? Should it read...
"I do wish to receive AAC update emails (they are really interesting weekly emails with cool Projects, Technical Articles & News). "

Mod: @bertus

 

Have you unchecked 'email options' and 'content options' in your account preferences?

 

I have been receiving quite a lot of mail from AAC over the last few days where normally I would get only a few per year.

I haven't looked into the issue yet, but if it keeps up there is always the option of sending them to the spam folder.

I haven't even confirmed that they are actually from AAC, I just delete them.

 

I just checked and I have all mail turned off except notify for conversations.

Mine are coming from...
product-update...
updates...

 

I have now unchecked the 'Newsletter' checkbox.
So far the emails have stopped (although it's too early to be certain).
My suspicion that the checkbox (or the associated description) is logically inverted is probably correct.

 

Already received 2 SPAM mails from AAC today.

 

I've also noticed a significant uptick in these e-mails and find them annoying. I suspect that someone on the commercial side of the house has decided to get more aggressive about sending out spam. At the bottom of the e-mail is an unsubscribe link. Have you tried that?

I just did that and we'll see if it's effective. My experience is that most sites that send out spam are pretty responsible on this score unless they are pure spam-mills.