No, sorry.
The last version of the plug-in with support for Lotus Notes is 7.1.x as we've seen dwindling adoption of the Notes version along with low market share of the solution. The 7.2/7.3 versions of the plug-in do not support Lotus Notes.
Please roll up a request throught your account team asking for the support and include the # of seats to protect and if there's enough demand the decision can be revisited.
Thanks,
Raymond