Constant Contact vs Substack
Constant Contact is a all-in-one marketing platform while Substack is a newsletter platform. Constant Contact has been around since 1995, giving it a 22-year head start over Substack (founded 2017). Substack starts at free versus $12/mo for Constant Contact. Substack offers a free plan (Unlimited subscribers, unlimited emails, all core features free — Substack only charges when you earn), while Constant Contact does not. Constant Contact has the edge with marketing automation, A/B testing, landing pages.
Quick Verdict
Constant Contact wins on deliverability, integrations.
Substack wins on price, rating, free tier.
Best for most users: Substack (independent writers and journalists).
Constant Contact
Small business marketing made easy
Constant Contact is one of the most established email marketing platforms, particularly strong for small businesses and nonprofits. Its event marketing capabilities and social media integration set it apart, though its automation features lag behind newer competitors.
Substack
The newsletter platform where writers build independent media businesses
Substack is the dominant newsletter platform that uniquely combines free publishing tools with a 10% revenue-share model, letting writers launch subscription-based media businesses with zero upfront cost. Beyond newsletters, it has evolved into a full creator ecosystem with podcasts, video, livestreaming, Notes (microblogging), and community Chat, backed by a powerful built-in discovery network that helps writers find audiences organically.
Feature Comparison
| Feature | Constant Contact | Substack |
|---|---|---|
| Rating | 4.1/5 | 4.4/5 |
| Starting Price | $12/mo | Free |
| Free Plan | No free plan | Unlimited subscribers, unlimited emails, all core features free — Substack only charges when you earn |
| Founded | 1995 | 2017 |
| Email Templates | 300 | 1 |
| Integrations | 300 | 0 |
| Deliverability Rate | 97% | 95% |
| Marketing Automation | ✓ | ✕ |
| A/B Testing | ✓ | ✕ |
| Landing Pages | ✓ | ✕ |
| Segmentation | ✓ | ✕ |
| Drag & Drop Editor | ✓ | ✕ |
| SMS Marketing | ✓ | ✕ |
| Ecommerce Features | ✓ | ✕ |
| API Access | ✓ | ✕ |
| Multi-Language | ✕ | ✕ |
| Web Push Notifications | ✕ | ✕ |
| Live Chat | ✓ | ✕ |
| Advanced Analytics | ✓ | ✕ |
Constant Contact: Pros & Cons
Pros
- +Longest 60-day free trial in the industry
- +Excellent event marketing features
- +300+ templates and integrations
- +Strong brand recognition and trust
- +Social media posting included
Cons
- −No free plan
- −Automation is basic on lower tiers
- −Gets expensive with larger lists
- −Interface feels outdated in places
- −Limited advanced features
Substack: Pros & Cons
Pros
- +Completely free to start with no upfront costs — zero barrier to entry with all core publishing features available immediately
- +Built-in audience discovery network with Recommendations and Notes driving organic subscriber growth (users report gaining 1,000+ subscribers through Recommendations alone)
- +True content ownership: creators can export their full subscriber list and content at any time to migrate elsewhere
- +Multimedia platform supporting newsletters, podcasts, video, livestreaming, Notes, and Chat communities in a single integrated experience
- +Strong reader engagement with genuine community interaction through comments, Chat, and Notes — higher engagement rates than typical social media platforms
Cons
- −The 10% platform fee plus Stripe's ~2.9% + $0.30 per transaction creates a 13-16% total take rate that becomes very expensive at scale (e.g., $1,300-$1,600/month on $10K revenue)
- −No email marketing automation, segmentation, A/B testing, or advanced personalization — all subscribers receive identical emails with no conditional logic
- −No public API and zero native third-party integrations — cannot connect to CRMs, e-commerce platforms, Zapier, or other marketing tools
- −Limited design customization with a single standardized template — no drag-and-drop editor, no custom HTML, and minimal branding options
- −Platform can remove content or delete accounts without notice, and customer support is difficult to reach for issue resolution
The Verdict
Substack edges ahead with a 4.4/5 rating compared to Constant Contact's 4.1/5. The gap comes mainly from value for money (4.9 vs 4) and deliverability (4.4 vs 3.9). On deliverability, Constant Contact reports 97% compared to 95% for Substack — a meaningful difference if inbox placement is critical for your campaigns.
| Criterion | Weight | Constant Contact | Substack |
|---|---|---|---|
| Starting Price | 30% | $12/mo | Free |
| Deliverability | 25% | 97% | 95% |
| Rating | 25% | 4.1/5 | 4.4/5 |
| Integrations | 10% | 300 | 0 |
| Free Tier | 10% | No | Yes |
Weights determine how much each criterion counts toward the final score. See full methodology
Choose Constant Contact if…
- + You need SMS marketing
- + You need marketing automation
- + You need ecommerce integrations
- + You need API access for custom integrations
Choose Substack if…
- + You want lower starting costs (Free)
- + You need a free plan to get started
- + You're a independent writers and journalists
- + You're a newsletter creators monetizing through paid subscriptions