If a contact downloads your newsletter titled, 'The Best Ways to Create Subject Lines for Email,' what would be the best next step to continue the conversation with this contact?
1) Send them a follow-up email asking for feedback on the newsletter
2) Add them to your general email list for future newsletters
3) Invite them to a webinar on email marketing best practices
4) Ask them if they would like to receive a personalized consultation on email subject lines
