RSA 564-F:5-507: Service on a Foundation.

(a) A foundation's registered agent is the foundation's agent for service of process, notice, or demand required or permitted by law to be served on the foundation.

(b) A foundation may be served by registered mail or certified mail if:

(1) The foundation does not have a registered agent; or

(2) After reasonable diligence, the foundation's registered agent cannot be served.

(c) Service under subsection (b) shall be effective if:

(1) It is correctly addressed to the foundation at the foundation's principal office;

(2) Postage is prepaid; and

(3) It is sent return receipt requested.

(d) Service under subsection (b) is perfected at the earliest of:

(1) The date on which the foundation receives the documents sent by registered mail or certified mail;

(2) If a person signs the return receipt on the foundation's behalf, the date of receipt shown on the return receipt; or

(3) Five days after its deposit for mailing with the United States Postal Service, as evidenced by the postmark.

(e) This section does not preclude other means of serving a foundation.