I have always felt that sending our supportive emails to PSA's and CSA's who have 0 VP and have been inactive for weeks or months.
After reading more of the reviews on this subject on Ask It is correct to treat them as equal.
You will never know when one will receive an email or they also may read one of our Newsletter that is sent to them that may inspire PSA or CSA to sign back in and begin continuing were they left off.