Email and Phone is considered by many to be the best methods. The handwritten note is rare today but for the few portrait photographers using them they are seeing very good results. One of the keys in sales is to get your portrait customers attention. The personal handwritten note sent via the US Postoffice, due to it’s rarity, does an excellent job of getting your clients attention.. The more personal your communications become, the more results you derive. A combo of all methods is required to be successful.