It’s easy to think of email as little more than a means of communication, but for businesses, email marketing is one of the most effective ways to grow an audience. According to a report by consulting firm McKinsey, email is 40 times better at acquiring new customers than Facebook and Twitter combined. And marketing research group eMarketer finds that email campaigns have a return on investment that’s more than four times the ROI of search, display, or social media.

Tell recipients how to opt out of receiving future email from you. Your message must include a clear and conspicuous explanation of how the recipient can opt out of getting email from you in the future. Craft the notice in a way that’s easy for an ordinary person to recognize, read, and understand. Creative use of type size, color, and location can improve clarity. Give a return email address or another easy Internet-based way to allow people to communicate their choice to you. You may create a menu to allow a recipient to opt out of certain types of messages, but you must include the option to stop all commercial messages from you. Make sure your spam filter doesn’t block these opt-out requests.
Remember the limitations of customer surveys. Customers may not know how they’d really respond to hypothetical prompts (such as, “How much would you pay for a product with [xx] feature?”), while relying too closely on survey data prevents you from understanding the nuance behind customer responses. Pair survey data with in-person feedback gathering, if possible.

One of the easiest ways to manipulate data is by throwing it into a spreadsheet. Almost anyone can then easily sort the data and quickly find similar segments. Vision6 lets you do this with your contacts, with a spreadsheet-like interface to filter your contacts. Instead of having to set filters and hope they pick the right people, you can see every field in your contact details, sort by the item you want, then select contacts and turn them into a new segment in seconds.