Tex. R. App. P. 6.3

As amended through May 28, 2024
Rule 6.3 - To Whom Communications Sent

Any notice, copies of documents filed in an appellate court, or other communications must be sent to:

(a) each party's lead counsel on appeal;
(b) a party's lead counsel in the trial court if:
(1) that party was represented by counsel in the trial court;
(2) lead counsel on appeal has not yet been designated for that party; and
(3) lead counsel in the trial court has not filed a nonrepresentation notice or been allowed to withdraw;
(c) a party if the party is not represented by counsel.

Tex. R. App. P. 6.3