$ echo "test" | gpg -aer info@mailvelope.com
gpg: automatically retrieved 'info@mailvelope.com' via Local
gpg: 0x308A28B7533156CF: There is no assurance this key belongs to the named
user
sub  rsa4096/0x308A28B7533156CF 2015-03-12 Mailvelope <info@mailvelope.com>
 Primary key fingerprint: 5D03 1F1D 410B 980F BC00  6E32 02C1 34D0 7970 1934
      Subkey fingerprint: 5F71 3FD0 BE84 B33E 6477  0818 308A 28B7 5331 56CF

It is NOT certain that the key belongs to the person named
in the user ID.  If you *really* know what you are doing,
you may answer the next question with yes.

Use this key anyway? (y/N)