[drucken]

Set up your own domain name for $5/year or less and use the free email aliasing that comes with it,

e.g. [e-mail] would be aliased to [e-mail] at your DNS provider.

Then you only ever pass around wvenable.me addresses. If you get a good provider, they will give you unlimited free aliasing (though they may not allow catch-all address for free, which redirect anything@ to some default address, due to spam potential).

Combined with monthly backups via IMAP or export from your actual email providers, you will never be dependent in either identity, contacts or content with any single provider.

Needless to say, all of the above is trivial to setup for a typical HN'er.