All we know about this pub is the following old newspaper extract:

To be sold, an old-accustomed Messuage or Public House, situated in Halesworth, call'd the Mill Post, with a cottage and also a Hempland thereto belonging, consisting of about 3 Roods, now in the occupation of Jonathan Cutts, and his under tenant, at the yearly rent of £8 8sIpswich Journal, 7th Sep 1776***