Something to be aware of regarding safe deposit boxes: possession of the key does not automatically grant access to the box.
The bank I use maintains a list of people I allow to access my box along with their physical signature. When I needed to access my box, I had to sign in with a pen, on paper and show my ID. They compared that signature with the one I gave when I first obtained the box. I was granted access if they matched. If someone else came in with the key but their name wasn't on the bank's list or the signature didn't match, they wouldn't allow access to the box.
So make sure people you want to be able to access the box are on that list (which means they will have to go to the bank to provide a signature ahead of time.)
To add to this: if someone is not on that access list but is instead listed in a will, my understanding is that the will has to go through probate before access to the box is granted. It's quite likely that people would want/need access to passwords before that.
It depends on the scenario. Which is why planning eventualities is so important. If I suddenly die, then my wife has knowledge and signatures on file necessary to keep going. Also a three ring binder book to look up since that is not the time to be making decisions. If both my wife and I die together, and our minor kids are the ones remaining than immediate password access is a good deal less important compared to the keeps being fed and housed and things being worked out. Of course the will will come into impact, guardianship, life insurance, social security survivors benefits, when they will live, where they will go to school. Winding down this business I have and other matters would be secondary.
I am not saying we do this right. I certain have to "sharpen the pencil right" but the point is this should not be an afterthought.
> simply own your domain name and point the MX record to whatever hosting provider you want
That's not necessarily a sure cure, depending on the hosting provider. RoadRunner (Spectrum / Charter) in the US and Shaw in Canada won't deliver emails from my domain hosted at Runbox.com (or sent directly from the runbox.com domain.) Spectrum's bounce message references an error code that translates to "Spectrum limits the number of concurrent connections from a sender, as well as the total number of connections allowed. Limits vary based on the reputation of the IP address. Reduce your number of connections and try again later."
I have 2 Advantage keyboards and both exhibit this issue. Back when I first got them (about 9 years ago) I called Kinesis about it, but they claimed they had never heard of the problem. While it seems to happen most often with modifier keys, I've had it happen with regular keys, too (including the delete key, which is always exciting :-).
I reported it several times between 2002-2005 as I got new keyboards and each time was told they were unaware of the issue. Heard the same thing from others that reported it between 2005-2010.
The bank I use maintains a list of people I allow to access my box along with their physical signature. When I needed to access my box, I had to sign in with a pen, on paper and show my ID. They compared that signature with the one I gave when I first obtained the box. I was granted access if they matched. If someone else came in with the key but their name wasn't on the bank's list or the signature didn't match, they wouldn't allow access to the box.
So make sure people you want to be able to access the box are on that list (which means they will have to go to the bank to provide a signature ahead of time.)