[laddng]

Gmail gives you the capability to automatically give access to a list of emails if you're inactive on your Gmail for x amount of time: https://www.google.com/settings/account/inactive

You can just send the master password to your password manager in that email as well.

[fearingreprisal]

Thank you for this suggestion, that sounds like something good to keep in mind! It makes sense that companies are beginning to think about this as well.