I have 6K leads but no email marketing. Should I send them all to MailerLite, start a campaign, and how do I avoid spam?
I wouldn't use MailerLite; use Kit (kit.com) instead. Set up a sequence, keep the first email short with few links, and encourage replies by being personal. Aim for high open rates; improving from 40% to 60% can increase revenue. Follow examples like Jay Klaus's welcome email, which is straightforward and transparent.