At Indiana University, you can use ARCHIVED: S/MIME client certificates from the InCommon Certificate Service to digitally sign and/or ARCHIVED: encrypt email messages. For instructions on getting a client certificate, see ARCHIVED: Get an S/MIME client certificate for digital email signatures at IU. For information about potential issues affecting various applications and devices, see ARCHIVED: Known issues with using S/MIME client certificates to digitally sign or encrypt email at IU.