Yes I have a public key.
If you want to be sure that no one eavesdrop on email that you send to me, you can use GnuPG (Gnu Privacy Guard) encryption.
Basically, you can use my public key to encrypt messages so that only I can decrypt them (even you can't decode them, because it requires the private key that pairs with the public and only I have it).
Also the public key can be used to verify emails that I sign, proving that they haven't been tampered with.
-----BEGIN PGP PUBLIC KEY BLOCK----- Version: GnuPG v1.4.9 (MingW32) mQGiBElfcIERBACMIMYqq4UW1bjs0TxofzAwBEWjtmlnsePXoll4L/YJqCiGS/sW 7NsHle9Vsnw4LWXIaYAmdHy+ZqF02SUEwoRjTHdDSwfe6H4IYMrk/4pDsw5lxBON QGtFZAUp8Em5S3GCV5mCyMQAi4a55YgECwqyAbi3BhnPm/0E/foRQmb25wCgoAjl XFTIVs9G9rKNDLTsFBfB/FUD/2vznh4KxKn3NS9LOESO8xlAXHiCEzlYNyWT+7dz ZgamHuKrd7My0hiwlJQTEG1rU2f7qpAXwmO0zTDYX1V7HI+PpVlwjctA9g2HcdmJ SPNmvrXRpbylHfZghzsnUZIbXguF8G6/0u5K+EiF+95bh293IGfsi6GqDDmlNK0k SyHSA/4y2Xf/LzIWobasChqqihh51O4zahLRDjPNwrfEWyAiRA5JIc3y1q2+UuQS xcZW7CGCHkTzFMk3B83lEXR/6jK0oQIJSE8uft0YR3sZeNDiFty1RHIKWm50Ii56 adJ3vkCJcg53Hdmj0kC90w+dbcd7LQUrRPFDDrTk6sQGdh4c6rQrSm9hbyBGaWd1 ZWlyZWRvIDxqb2FvLmZpZ3VlaXJlZG9AZW5pZGUubmV0PohmBBMRAgAmBQJJX3CB AhsDBQkSzAMABgsJCAcDAgQVAggDBBYCAwECHgECF4AACgkQ8iqVGYRUSmflCACe KqkhtYnCOUvrudwkgaN+OFOT7koAoJ53BcV9kjc54kfnZM3nbGC8EO2siEYEEBEC AAYFAklhDb0ACgkQyc7hvtr3o9ERHgCfXOyDug4O8T2YZDaKKoRkspNUf2sAn26K NxZgEfMdy/VHbxSZ3IBzM3H8uQINBElfcIEQCACSxfTDbtW0omSrE8Mc6GHo8bMz MHSadQxXp4sT85e/YXyPNEWh35npt+UIyX992tVhpCTktReQfjpBBihu+XyNncAx zSdE9fhjy7K6T/x6f/fQPNLGOdQUzJOrXdwtZj1GYSXUpFgGqjMVQsGdtMa4NIzR WSMdGlQRm2lyHrwHBOsbK2fBjqrGW3FL6oJl0ydX+1WZZNnB9QdMfgmMQWIUm/fs ubqnA65Kv/0qDMU51qvj7GvmZ5b80QiBJXhtL0B9gdWyMubMYkAk3agJFTa5GefJ mQ+cuboinZbCLR7WjId2QkSVaSroZdTK38VF5czIAp/8FPtHuK1wqwDxwSUfAAMF CACBWhGb6iZO9J9lTWqvJu7HbxGQpM4L9Vnm9sxdw9YfreSTGPL476CNz9UwCV7p qJW6z4aufOAjJQx3V7eYClSISO8LtUX15cQiJ0vFKnJyB9coiUH0hdxQrJ/aQmV7 MOHkVyPLgaEhX0Z4XeIRKskxkqc/KXp22Gb770/2Cv7KRxTJY+aM6flq/efnJ1LP NGdEtWYI8V3y+SffA9AH/rbV+VyTWhcE6GaCClPVMXFUnQK7VycdIbejbdLX/jMM cewC7IHnDIU11CKBFbQbYJkkQA1uqanjHopZ1b8jo1P0v1vSQ2UsTORtFP1ng737 kmm79fZBT/nKxy/yHkyKphpRiE8EGBECAA8FAklfcIECGwwFCRLMAwAACgkQ8iqV GYRUSmdSTgCdE38oaZbhjX1OdwGObOOqgl0rMYEAn2Fla/GT1bW6emmELMgO9lWz 8Jkm =8e6K -----END PGP PUBLIC KEY BLOCK-----
Published on Friday 2009/01/30, last modified on Wednesday 2016/01/06