Exactly. I give services like this - generally coded as someone's first "wow I know PHP now!" or the modern equivalent - approximately 5 years shelf life, at best.

Whereas I have notes-to-future-me on my calendar that I put there 30 years ago.

What calendar system have you been using for 30 years, that's survived that long?

I think I sent one of those "mails to the future" in the 90's, asking 2002 me how I am. I don't think it ever arrived, or the free email domain I was using ceased operating.

Sheesh, anyone old enough to remember the services offering a free email address with a choice of maybe 50 domains in a dropdown?

> Sheesh, anyone old enough to remember the services offering a free email address with a choice of maybe 50 domains in a dropdown?

Mail.com is still around and offers a lot of domains, though I think the amount of domains has reduced over the years.

Not the same one all that time, but I've always exported/imported when I have changed.

For the same reason, I have every email I've ever sent or received, going back to my 1988 FIDOnet account.