There is a new module "notelist" for MM 2.0 and 2.1, with which you can put individual items on an MM list on a watch list. The items on the watch list can be output as a separate list or sent by e-mail.

Read more in the manual:

The module is ready for use - as an "early-adopter" the module can be used against a donation of 350€ (net) even before completion of the fundraising.