# Thunderbird Configuration on Windows for Secure Mail [[Prev|thunderbird]] | *step 17 of 17* | **End** ## Tell Thunderbird how much you trust your correspondent 1. Under *OpenPGP | Key Management* (*then right-click on the key you want*) you can set the trust level you have for your correspondent * This trust level is private: no-one knows how you have set owner trust for a key * If you trust a key at least marginally you won't get the annoying dialog box asking you to check a key every time you send an e-mail 1. Note: typically people *sign* each other's keys to vouch that the public key of a person corresponds to their real identity * Signing someone's key only says you believe that their public key belongs to them (*not that you trust them*). * Key signing is beyond the scope of this tutorial 1. Congratulations :) You can now send and receive secure e-mail! [[!img tbird17.png align=left]]