Traffic is rented attention
When you buy solo ad clicks, you are paying for access to another publisher’s audience. If a visitor voluntarily joins your list, you gain a direct channel for future communication subject to the permissions you collected.
Make the opt in specific
Tell people what they are signing up to receive. A clear value exchange helps set expectations for the emails that follow.
Connect acquisition to follow up
The first email should match the promise made on the landing page. Keep the path coherent from ad message to page to inbox.
Measure list quality over time
An opt in is an early signal, not the final result. Watch engagement and downstream actions so you can compare traffic sources on more than raw subscriber count.