[enum-wg] Open implementations of E2U+sms:mailto / E2U+mms:mailto

Hello,

The ENUM services for E2U+sms:mailto, E2U+mms:mailto and E2U+ems:mailto
refer to ITU standards TS 23.140 and TS 26.140 -- elaborate descriptions
of how emails should be exchanged to relay SMS / MMS /EMS content.

Is anyone on this list aware of an open source implementation,
preferrably one whose interoperability has been shown?


Thanks,
 -Rick