There may be a good reason for this. But I don't know what it is:
eBay account update: Action needed
Dear Martin Bishop,
We noticed that you haven't signed in to your eBay account for quite some time, and we'd like to invite you back to buy and sell again. eBay's a great place to buy what you want, and sell what you have.
Unfortunately, since you haven't used your eBay account for a while, it will be deleted if you don't sign in within 30 days from the day this email was sent.
We appreciate your business and hope to have you back as part of the eBay community.
"We appreciate your business" so much that we've decided to launch punitive action against you. Does it cost eBay any money to maintain these accounts? I doubt it. Is it beyond their imagination to come up with a "carrot" approach? Apparently.
Why not something like: "We've noticed that you haven't signed into your account for a while. We'd love to have you come back and visit so here's an xyz incentive to encourage you to try us out"?
I just don't get it.