Postscript vs Klaviyo SMS Pricing (2026)
Compare / Postscript vs Klaviyo SMS
Shortlist
Team size
25 seats

Postscript vs Klaviyo SMS

SMS Marketing pricing comparison · 2026

Postscript has a free plan, then $100–$699/mo, while Klaviyo SMS has a free plan, then $35/mo. These products use different pricing models (Hybrid (seat + usage) vs ), so a direct price comparison isn't meaningful — costs depend on usage volume and mix.

Visit
See pricing on each vendor's site
Above-the-fold path — each link opens the vendor's pricing page in a new tab.
Visit Postscript pricing
Free plan limits → Discount programs →
Visit Klaviyo pricing
Free plan limits → Discount programs →
Compare
2 products · SMS Marketing
Side-by-side · live
Postscript
SMS Marketing pricing intelligence
verified 6d ago
$329 $845
View pricing →
Klaviyo SMS
SMS Marketing pricing intelligence
verified 4mo ago
$329 $845
View pricing →
Recorded annual contract medians
Postscript median is $516 less than Klaviyo · different customer contracts; not a quote
Cheapest $329
Spread 61%
Estimated license cost
at 25 seats
List price × seats. Click a tier below to lock it.
Professional
$150K/yr
year 1 license · $500/seat
Usage-based
Custom rates
see vendor pricing for volume tiers
What buyers actually pay
median, annual
Vendr deal-flow data. The real benchmark, not list price.
↓ Lowest median
Median annual
$329/yr
Vendr · n=53
Median annual
$845/yr
Vendr · n=42
REF · 01

Sources & confidence

Every dollar amount and contract clause below traces back to a sourced fact. We don't manufacture composite scores.

Where this data comes from
Vendr · TrustRadius · Reddit · BBB · official docs
Sources 7 sourced facts
4 hidden-cost · 1 contract · Vendr median · 1 review platform
Last verified 6d ago
Confidence Medium confidence
Sources 9 sourced facts
5 hidden-cost · 1 contract · Vendr median · 2 review platforms
Last verified 4mo ago
Confidence Limited confidence
REF · 02

Plans at a glance

Every tier per product. Lock one to drive the cost row above and reveal a tier-specific outbound CTA.

Tier ladder
Click a tier to lock the cost row to it. Locking surfaces a tier-specific Visit CTA.
REF · 03

Hidden costs

Each cost is severity-ranked, with the dollar range quoted from its source (Vendr, Reddit, TrustRadius, BBB, official docs) — never our estimate.

Beyond the sticker
Severity-ranked, sourced
4 documented
  • Per-Message Usage Charges
    1 source
  • Carrier Fees
    1 source
  • True Monthly Cost Exceeds Base Plan
    1.5-2 times, or even 2.5-3.4 times, the base plan price
    1 source
  • Minimum Monthly Spend on "Starter" Plan
    $49
    1 source
5 documented
  • Agency Implementation
    under $2,500 to over $10,000
    1 source
  • MMS and Longer Messages
    3 credits or more
    1 source
  • International Sending
    25,000 SMS credits (for 5,000 messages to UK)
    1 source
  • Unused Credits
    1 source
  • Add-on Products
    $500/month for 100,000 profiles
    1 source
REF · 04

Contract terms

The fine print, surfaced. Green = buyer-friendly. Each clause backed by a quoted source.

Postscript
Klaviyo
Auto-renewal
—
—
Cancellation
—
at any time, effective immediately or at the end of the current billing period
Commitment
✓ $49 monthly minimum spend on "Starter" plan
—
Price escalation
—
—
Can downgrade
—
—
Based on 2 verified sources (Vendr · TrustRadius · BBB)
REF · 05

What users say

Aggregated, with sample sizes. We use whichever review platform has data.

User reviews
TrustRadius · Trustpilot · G2
G2
4.8out of 5 (161)
Best for
Small Shopify stores testing SMS
Watch out
High Platform Fees and Pricing Issues
TrustRadius
9out of 5 (114)
Trustpilot
1.8out of 5 (360)
Best for
Testing SMS marketing
Watch out
Expensive Pricing
Decide
Get a quote from each vendor
Each link opens the vendor's pricing page in a new tab.
Visit Postscript pricing
Free plan limits → Discount programs →
Visit Klaviyo pricing
Free plan limits → Discount programs →
License cost is computed from publicly listed plans (real math, list price × seats). Median annual cost is from Vendr's deal flow when available — see source badges. Hidden costs and contract terms each cite their own sources. We do not invent composite scores.
SMS Marketing

Postscript

Free plan; paid $100–$699
/mo
5 plans · Free tier
Full pricing breakdown →
VS
SMS Marketing

Klaviyo SMS

Free plan; paid $35
/mo
2 plans · Free tier
Full pricing breakdown →
⚖

Different Pricing Models

Direct price comparison isn't meaningful here — Postscript uses Hybrid (seat + usage) pricing while Klaviyo SMS uses pricing. Your actual cost will depend on usage volume, team size, or both. Here's each product in its native unit.

Hybrid (seat + usage)

Postscript

Free plan; paid $100–$699/mo
See full Postscript pricing →
vs

Klaviyo SMS

Free plan; paid $35/mo
See full Klaviyo SMS pricing →

Postscript and Klaviyo SMS both operate in the sms marketing category. This page compares their list pricing.

Plan-by-Plan Pricing

Plan Postscript Klaviyo SMS
Starter Free /month Free /month
Growth $100 /month $35 /month
Professional $500 /month —
Postscript AI Plan $699 /month —
Enterprise Custom —

Market Intelligence

Postscript

Median annual cost
$329
Based on
53 deals

Klaviyo SMS

Median annual cost
$845
Based on
42 deals

What Users Say

Postscript

G2
4.8out of 5 (161)
Top complaints
  • High Platform Fees and Pricing Issues
  • Customer Service Decline and Condescending Behavior
  • Glitches and Technical Issues

Klaviyo SMS

Trustpilot
1.8out of 5 (360)
TrustRadius
9out of 10 (114)
Top complaints
  • Expensive Pricing
  • Steep Learning Curve/Complexity
  • Customer Support Issues

Hidden Costs

Beyond the sticker price — what catches buyers off guard.

Postscript 4 hidden costs

high
Per-Message Usage Charges
medium
Carrier Fees
critical
True Monthly Cost Exceeds Base Plan 1.5-2 times, or even 2.5-3.4 times, the base plan price
medium
Minimum Monthly Spend on "Starter" Plan $49
See all Postscript hidden costs →

Klaviyo SMS 5 hidden costs

high
Agency Implementation under $2,500 to over $10,000
medium
MMS and Longer Messages 3 credits or more
high
International Sending 25,000 SMS credits (for 5,000 messages to UK)
medium
Unused Credits
medium
Add-on Products $500/month for 100,000 profiles (source dated Jul 2026)
See all Klaviyo SMS hidden costs →

Contract Terms

Term Postscript Klaviyo SMS
Auto-renewal — —
Cancellation — at any time, effective immediately or at the end of the current billing period
Minimum commitment $49 monthly minimum spend on "Starter" plan —

Continue researching

Postscript

Klaviyo SMS

Related Comparisons