ActiveCampaign vs Klaviyo
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.
| ActiveCampaign | Klaviyo | |
|---|---|---|
| Published rate | $29/mo | $20/mo |
| Team size modeled | 5 | 5 |
| Annual subscription | $1,740/yr | $1,200/yr |
What the invoice doesn't show
ActiveCampaign
Contact-tier pricing creates steep jumps: 1K to 5K contacts on Plus leaps from $59/mo to $179/mo — a 203% increase. As of November 2025, new accounts are charged for ALL contacts including unsubscribed, bounced, and unconfirmed — people you legally cannot email.
Users report bills doubling without changing plans. Specific complaints: '$588 to $1,800 after five years,' '$1,400/month suddenly turned into $2,800/month for the exact same list and features.' G2 shows 403 mentions of 'Expensive' as a complaint category.
Core features sold separately: SMS ($21/mo activation + per-message credits), CRM Pipelines ($49-107 first user), Custom Reports ($159/mo), Dedicated IP ($750 one-time). Real yearly cost is 20-40% higher than advertised.
AI and advanced features locked to higher tiers: predictive sending and content optimization are Pro-only ($235/mo at 5K contacts). The Starter plan caps at 25K contacts — forced upgrade to continue growing.
Klaviyo
Active-profile billing punishes growth: 5K to 10K subscribers raises your bill 50%+ ($100 to $150/mo). As of February 2025, Klaviyo bills on 'active profiles' — explicitly suppressed and unsubscribed contacts do not count, but non-opted-in checkout contacts (people who gave their email without explicitly subscribing) do count. One agency client was paying for 20-30K profiles who had never opted in — $5,400/year wasted on contacts they could not legally market to.
SMS credits have hidden multipliers: add a single emoji and encoding changes make messages cost 2 credits instead of 1. MMS (images) = 3 credits. International SMS to UK = 5 credits. One client burned her entire monthly SMS budget in a single campaign because of emoji usage.
Klaviyo automatically upgrades your billing tier when contacts exceed a threshold but does not automatically downgrade when your list shrinks. No annual billing discount available — unusual for SaaS.
If monthly spend exceeds $10,000, brands are automatically enrolled in Klaviyo One with a mandatory 20% surcharge — $24,000/year extra added without opt-in. Professional support requires $5,000+/mo spend; below that, expect days-long ticket response times.
What teams are switching to
Replacing ActiveCampaign
Brevo
Free (300 emails/day), Starter $9/mo, Business $18/mo
Email-volume-based pricing with unlimited contacts on all plans. At 10K contacts, Brevo costs ~$35/mo vs ActiveCampaign Plus at $239/mo. AI subject line generator and send-time optimization included.
MailerLite
Free (1K subs), $10/mo Growing Business, $20/mo Advanced
Advanced plan at 5K contacts is ~$39/mo vs ActiveCampaign Plus at $179/mo. AI writing assistant for subject lines and content included. Free plan covers 1,000 subscribers with 12,000 emails/month.
Moosend
$9/mo (500 subs), ~$48/mo (5K contacts)
Full automation suite at a fraction of ActiveCampaign's cost with no feature gating on core plans. AI-driven product recommendations and predictive analytics for ecommerce.
Replacing Klaviyo
Brevo
Free (300 emails/day, unlimited contacts), from $29/mo
Pay per email sent, not per contact — fundamentally different cost structure. At 10K contacts, Brevo costs $29/mo vs Klaviyo's $150/mo (81% cheaper). AI content generator and per-contact send-time optimization included.
Omnisend
From $16/mo, Pro $59/mo+
At 25K contacts: $282/mo vs Klaviyo's $400/mo (30% cheaper). SMS credits included in Pro plan. 250+ templates. Users report $68 return per dollar spent.
Sender
From $10/mo
At 10K contacts: $40/mo vs Klaviyo's $150/mo (73% cheaper). Described as '79% cheaper than Klaviyo' overall. 24/7 human support included at all tiers.
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 | ActiveCampaign | Klaviyo |
|---|---|---|
| Annual subscription | $1,740 | $1,200 |
| Labor cost | $9,000 | $9,000 |
| Error & rework cost | $1,200 | $1,200 |
| Total Cost of Ownership | $11,940/yr | $11,400/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 ActiveCampaign and Klaviyocost more than their published pricing suggests. The right choice depends on your team size and how you weigh each tool's trade-offs.
ActiveCampaign starts at $29/mo , but watch for Contact-tier pricing creates steep jumps: 1K to 5K contacts on Plus leaps from $59/mo to $179/mo — a 203% increase. As of November 2025, new accounts are charged for ALL contacts including unsubscribed, bounced, and unconfirmed — people you legally cannot email.
Klaviyo starts at $20/mo , but watch for Active-profile billing punishes growth: 5K to 10K subscribers raises your bill 50%+ ($100 to $150/mo). As of February 2025, Klaviyo bills on 'active profiles' — explicitly suppressed and unsubscribed contacts do not count, but non-opted-in checkout contacts (people who gave their email without explicitly subscribing) do count. One agency client was paying for 20-30K profiles who had never opted in — $5,400/year wasted on contacts they could not legally market to.
An AI-native alternative may replace the workflow at a fraction of the TCO.
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