S/MIME signatures in cfmail

Hello,

We are trying to send an email with an S/MIME signature / certificate using Lucee and the “cfmail” function,
however, the documentation does not seem to indicate an attribute like the one used in
ColdFusion, “sign”. Is the implementation of this feature planned? Are there any alternative ways to use S/MIME signatures with Lucee?

Any help or advice would be greatly appreciated.