Constant Contact vs ConvertKit
Side-by-side total cost of ownership: subscription fees, labor, hidden costs, and AI alternatives.
Published pricing
The subscription is only part of the cost.
| Constant Contact | ConvertKit | |
|---|---|---|
| Published rate | $12/seat/mo | $39/seat/mo |
| Team size modeled | 5 | 1 |
| Annual subscription | $720/yr | $468/yr |
What the invoice doesn't show
Constant Contact
Constant Contact's pricing scales aggressively with contact count. The $12/mo Lite price is for 500 contacts. At 10,000 contacts, Lite jumps to $120/mo, Standard to $160/mo, and Premium to $300/mo. A 50,000-contact list costs $430/mo on Premium.
Lite plan limits email sends to 10x your contact count per month and blocks all automation. Even basic welcome sequences require Standard ($35/mo for 500 contacts). This means the '$12/mo' plan can't do what most businesses need email marketing for.
Constant Contact's email editor and templates are widely described as dated. Users report limited design flexibility, clunky drag-and-drop building, and templates that look like they haven't been updated since 2015.
Contract cancellation requires calling customer support. Users report being charged for months after requesting cancellation via email, with refunds requiring escalation to management.
ConvertKit
Kit's Newsletter plan (free) supports up to 10,000 subscribers but blocks visual automations, sequences, and third-party integrations. The features that make email marketing effective require Creator ($39/mo, up 35% since September 2025) or Creator Pro ($79/mo).
Pricing scales steeply with subscriber count after the September 2025 increase. At 25,000 subscribers, Creator costs $99/mo and Creator Pro $166/mo. At 55,000 subscribers, Creator Pro hits $340/mo — well into enterprise tool pricing for what remains a creator-focused platform.
Kit lacks built-in A/B testing for email content (only subject lines). There's no send-time optimization, no multivariate testing, and limited segmentation compared to marketing automation platforms at similar price points.
Kit's visual automation builder, while praised for simplicity, can't handle complex conditional logic. Users report needing to build workarounds with tags and segments for workflows that tools like ActiveCampaign handle natively.
What teams are switching to
Replacing Constant Contact
Brevo (Sendinblue)
Free (300 emails/day), $9–$18/mo (5K-20K emails)
Pay-by-email-volume rather than contact count — store unlimited contacts for free. AI-powered send-time optimization and content generation. Includes CRM, SMS, and WhatsApp at no extra cost.
Kit (ConvertKit)
Free (10K subs), $39/mo (Creator), $79/mo (Creator Pro)
Creator-focused email platform with visual automation builder on all paid plans. AI subject line generator and content assistant included. Free plan supports up to 10,000 subscribers. Note: Kit raised prices 35% in September 2025.
MailerLite
Free (1K subs), $10/mo (Growing), $20/mo (Advanced)
Modern email marketing with AI writing assistant, smart sending, and advanced automation at a fraction of Constant Contact's price. 1,000 subscribers and 12,000 emails/month free.
Replacing ConvertKit
Beehiiv
Free (2.5K subs), $49/mo (Scale), $99/mo (Max)
Newsletter platform built for growth with AI writing tools, built-in referral program, and ad network for monetization. Free plan includes unlimited sends and up to 2,500 subscribers. Designed for the creator economy Kit pioneered.
MailerLite
Free (1K subs), $10/mo (Growing), $20/mo (Advanced)
Full visual automation on paid plans starting at $10/mo vs Kit's $29/mo. AI writing assistant, A/B testing (not just subject lines), and send-time optimization included. More features at a lower price point.
Buttondown
Free (100 subs), $9/mo (Basic), $29/mo (Professional)
Minimalist newsletter tool for writers who want clean design without bloat. Markdown-native editor, built-in analytics, and paid subscription support. Free for up to 100 subscribers.
StackCut doesn't sell or recommend any of these tools. We show them for context. The decision is yours.
Total Cost of Ownership
Subscription fees plus labor and error costs, modeled at $50/hr loaded rate (BLS ECEC).
| Cost Component | Constant Contact | ConvertKit |
|---|---|---|
| Annual subscription | $720 | $468 |
| Labor cost | $9,000 | $9,000 |
| Error & rework cost | $1,200 | $1,200 |
| Total Cost of Ownership | $10,920/yr | $10,668/yr |
| Est. AI alternative | $5,088/yr | $5,088/yr |
Labor rate based on BLS ECEC June 2025 ($45.65/hr private industry total compensation, rounded to $50). Team sizes differ because each vendor targets different market segments. Your actual numbers depend on team size, role mix, and usage. Run it with your own data.
Which one fits your team?
Both Constant Contact and ConvertKitcost more than their published pricing suggests. The right choice depends on your team size and how you weigh each tool's trade-offs.
Constant Contact starts at $12/seat/mo , but watch for Constant Contact's pricing scales aggressively with contact count. The $12/mo Lite price is for 500 contacts. At 10,000 contacts, Lite jumps to $120/mo, Standard to $160/mo, and Premium to $300/mo. A 50,000-contact list costs $430/mo on Premium.
ConvertKit starts at $39/seat/mo , but watch for Kit's Newsletter plan (free) supports up to 10,000 subscribers but blocks visual automations, sequences, and third-party integrations. The features that make email marketing effective require Creator ($39/mo, up 35% since September 2025) or Creator Pro ($79/mo).
An AI-native alternative may replace the workflow at a fraction of the TCO.
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