Okla. Stat. tit. 58, § 58-331.2: Mailing of notice to creditors - Personal delivery of

notice.

After notice is given as required by Section 331 of this title,

an affidavit of mailing and, if applicable, of personal delivery,

and an affidavit of publication must be filed with the district

court clerk. The affidavit of mailing, and, if applicable, of

personal delivery, shall be made by the personal representative and

shall state words to the effect that the personal representative

personally, or by and through the personal representative's

attorney, mailed notice by first-class mail to all creditors of the

decedent known to the personal representative on the date said

notice was filed with the district court clerk for the county in

which the probate is pending. Said affidavit shall also state the

identities and last-known addresses of such creditors and the date

said notice was mailed or delivered. If the decedent had no known

creditors or had one or more creditors whose addresses were not

known to the personal representative as of the date said notice was

filed, there shall be filed an affidavit of the personal

representative to the effect that nomailing is required and the

reasons therefor.