Photo by Sarah W on Unsplash
Also published on LinkedIn
From followers to subscribers, and subscribers to customers, actionable lessons on newsletters, lead magnets, and automations.
For the first 5 days of this challenge, we talked about how to get someone to share their email address.
Today's the harder question: what do you actually do with it after?
Most people stop at the email. Name in the database, lead magnet delivered, welcome email sent. Then everyone gets the same newsletter every Tuesday until they unsubscribe.
That's a list. It's not a system.
The shift happening right now in marketing is that everyone serious is moving from email-first to signal-first. The email is just the wrapper. The signal, what someone did, when they did it, and what it tells you, is the actual asset.
There are two sides to this.
Inbound signals: what your audience tells you
Every subscriber gives you signals from the moment they sign up. Most people just don't track them.
→ How they signed up: which lead magnet, which landing page, which referral source
→ First touchpoint: did they find you on LinkedIn, through a podcast, a guest post, an ad
→ What they engage with: which subject lines they open, which links they click, which emails they reply to
→ LinkedIn behavior: profile visits, post likes, comments, DMs, connection requests
→ Newsletter behavior: which sections of an issue they click on, which articles they share
A subscriber who came in through a webinar lead magnet, replied to your welcome email, clicked the pricing link last week, and viewed your LinkedIn profile twice yesterday is not the same as someone who downloaded a free PDF six months ago and never opened anything since.
Same database row. Completely different person.
LeadShark handles a lot of this on the LinkedIn side. It tracks who's engaging with your posts, who's visiting your profile, who's responding to your DMs, and lets you act on it. It also has a signals feature specifically for this. If your audience lives on LinkedIn, this is the closest thing to a CRM for your warm network. You can see the newsletter details on beehiiv subscriber profiles and create automated segments.
On the newsletter side, your ESP already has most of this data. The question is whether you actually use it. Tags, segments, click-tracking. Most people set up an ESP, send broadcasts, and never touch the segmentation tools.
Outbound signals: what's happening to your audience without them telling you
This is the part most creators miss entirely.
Outbound signals are events happening at your subscriber's company, role, or context that change whether they're worth reaching out to right now.
→ Company funding rounds (someone just raised? They're hiring and spending)
→ Job changes (your old contact got promoted, or moved to a new company)
→ Department changes (new VP of marketing? They're rebuilding the stack)
→ Company size changes (rapid growth, layoffs, restructures)
→ Tech stack changes (they just adopted a tool you integrate with)
→ Industry-specific triggers (regulatory changes, IPO filings, M&A)
You can't see these in your ESP. You need enrichment tools. CompanyEnrich, Clay, Apollo, Common Room, Clearbit, or ZoomInfo, depending on your scale and audience. Or you can build custom systems with Claude.
The reason this matters: someone on your list who just got promoted to a role where they make purchasing decisions is a completely different lead than they were six months ago. You don't know unless you're tracking it.
For most newsletter creators this sounds like overkill. It's not, if your subscribers are buyers and your product has any meaningful price tag.
How to actually use signals
You don't need a 17-tool stack on day one. Start with what you have.
→ Tag subscribers by source (which lead magnet, which channel)
→ Tag based on behavior (replied to a welcome email = warm, opened 5+ issues = engaged)
→ Segment your sends so different groups see different content
→ Look at your top engagers monthly. DM them. Ask what they're working on.
→ For B2B: enrich your top 100 subscribers with company data. Watch for triggers.
The point isn't to automate everything. It's to know who's hot right now so you can be useful to them at the right moment.
The mental shift
Treating subscribers as identical names in a list is the email-first mindset. Treating them as humans with context, history, and changing situations is the signal-first mindset.
The first one optimizes for sending. The second one optimizes for actually building a business.
Tools are getting cheaper, and data is everywhere. The constraint isn't technology anymore. It's whether you're paying attention.
Full ESP comparison table with pricing at different list sizes, free at leadletters.digital
See you tomorrow.
Selim