Effective January 1, 2024, California has updated conditions under which the organization license number must be included in an email for both Residents and Nonresidents.
A licensee's license number must be included in emails that involve activity requiring licensure. The license number must:
a. be in a type size that is no smaller than the largest of
any phone number, street address, or email address of
the person included in the email;
b. if an individual licensee, appear next to or on the line
below the individual's name or title; and
c. if an organizational license, appear next to or on the
line below the organization's name if the email is sent
from the organization and not an individual licensee.