What must written communication from lawyers soliciting clients include?

Written communications from lawyers soliciting clients are subject to specific rules to ensure that they are not misleading and comply with professional standards. One of the main requirements is that any written solicitation must clearly identify itself as advertising material. This transparency helps prevent confusion among potential clients regarding the nature of the communication and ensures that they understand it is a marketing effort, rather than a personal or direct correspondence regarding legal representation.

The inclusion of advertising material on the envelope, as indicated in the correct answer, can help identify the solicitation and align with the ethical requirement of clear communication about the purpose of the correspondence. This practice promotes honesty and integrity within the legal profession, fostering trust between lawyers and the public they serve.

The other options do not align with the requirements set forth in the ABA Model Rules. Client testimonials can be considered misleading or create unjust expectations. Personal notes may not provide necessary or relevant information about the solicitation. A list of all cases handled could also be deemed inappropriate or irrelevant in the context of a solicitation and risks violating confidentiality or creating expectations that may not be fulfilled.