Know your spam rules. A lot of innocent people send spam because they didn't know any better. Read up on the CAN-SPAM act to avoid any trouble. Put simply, you're allowed to send bulk email only to people who specifically asked to be on your mailing list. If you collected email addresses for a lunch giveaway or an event invitation, then you don't have permission to send marketing emails unless you made that clear at signup. Include an obvious unsubscribe link in every email, and don't forget to remind subscribers how they got on your list in the first place.
Purchase (formerly the bottom): This phase should drive the sale, such as a free trial or discount offer. These messages can be much more direct and sales-oriented since these customers have indicated they are closer to a purchase than others. In this phase, it’s important to keep your emails focused on the primary call to action (CTA) and make sure the transaction is as easy as possible. Some companies opt to offer post-purchase set-up assistance or support to help customers move from engagement to purchase.
Test. Different email clients and mobile devices display emails differently. Send test emails to colleagues, or use a testing program to make sure your emails are going to look good on screens big and small. Testing reveals design mistakes before it's too late, and testing programs can predict whether or not a campaign will get caught in a spam filter. You could even set up accounts with a few different email services for easy testing. Avoid sending one big image as a campaign, and cover your bases with a plain-text option for every email.
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