When personal service is required of any summons or citation issued by a probate court, the court may direct such service to be made by registered mail addressed to the party entitled thereto at his post office address. Further service may be ordered.
Mass. Gen. Laws ch. 215, § 46
Summons or citation; service by registered mail
Official source: Massachusetts Legislature. Reproduced from public-domain Massachusetts statutes; confirm against the official source for the current text. Not legal advice.