Honest comparison

sO2 vs. Constant Contact.

Constant Contact helps you stay in touch. sO2 helps you meet new people.

Constant Contact is a digital and email marketing platform built for small businesses: AI-powered email, social posting, SMS, event campaigns, all famously easy to use. Every bit of it points at one audience, the subscribers you already earned. Here is the uncomfortable math: that list shrinks on its own. Unsubscribes, dead inboxes, churn. If nothing feeds the top, easy email just gets easier and smaller.

sO2 feeds the top. We start with data, not a signup form: a postal-verified list of the exact people who look like your best customers, reached in their inbox, on their TV, and in their social feeds. You will know it worked because we match results back to actual customers, name by name.

Where Constant Contact genuinely shines

For a small business that wants to send a newsletter, promote an event, and post to social without hiring anyone, Constant Contact earns its reputation. It is simple, supported, and affordable. Keep it for exactly that. It sends to the list you have. It was never built to find the list you need.

Side by side

sO2 + Atlas vs. Constant Contact

One tool mails your list. The other builds it. Row-by-row.

CapabilitysO2 + AtlasConstant Contact
Email and SMS to your existing subscribers
Event campaigns and social posting tools
Data-driven email to new prospects (acquisition)
Permissioned, identity-resolved audience data included
OTT/CTV on the same buy
Google + Meta ads managed for you (decades of experience + automation)
Identity-matched social retargeting of the same audience
Senior media strategist runs the plan
Built for
Customer acquisition
Owned-audience marketing
!

Bottom line: Keep Constant Contact for the audience you have. Put sO2 to work building the audience you want: targeted email, OTT/CTV, and identity-matched social, pointed at your next customers instead of your current ones.

Included / strong fit
Partial / depends on plan
Not offered
FAQ

Questions we actually get

Does sO2 replace Constant Contact?

Usually not. They mail your subscribers. We reach the people who should be your subscribers. Most partners run both, and the ones who grow fastest treat sO2 as the faucet and their newsletter tool as the bucket.

My list keeps shrinking. Is that normal?

Completely. Every list decays through unsubscribes and dead addresses. The question is what refills it. Waiting on organic signups is slow. Acquisition media refills it on purpose, with people you chose.

Is targeted email even legal without an opt-in?

Yes, done right. Our sends are CAN-SPAM compliant with double opt-in data sources, managed unsubscribes, and monthly data scrubs. This is permissioned, identity-resolved data, not a scraped list.

What does it cost to try?

Packages have no minimum, and direct insertion orders start at $15K. One call gets you a straight answer on fit, even if that answer is not yet.

Want the full picture first? See how sO2 compares to every alternative.

Ready to reach the customers you don't have yet?

Tell us who your best customer is. We'll show you how many more of them are out there, and exactly how we'd reach them.