Postscript vs Klaviyo: Email & SMS Marketing Comparison (2026)

An independent side-by-side comparison of Postscript and Klaviyo for email & sms marketing buyers — pricing, features, integrations, and how often each is cited by major AI engines.

AI Citation Scorecard

How often each is cited by major AI engines when buyers ask email & sms marketing questions. Last 90 days across ChatGPT, Perplexity, Gemini, Claude, and Copilot.

Klaviyo leads overall — 100% cited vs Postscript 0% across 10 probes.
ChatGPT
Postscript
0 / 1 probes
0%
Invisible
KlaviyoLeads
1 / 1 probes
100%
Excellent
Perplexity
Postscript
0 / 1 probes
0%
Invisible
KlaviyoLeads
1 / 1 probes
100%
Excellent
Gemini
Postscript
0 / 1 probes
0%
Invisible
KlaviyoLeads
1 / 1 probes
100%
Excellent
Claude
Postscript
0 / 1 probes
0%
Invisible
KlaviyoLeads
1 / 1 probes
100%
Excellent
Copilot
Postscript
0 / 1 probes
0%
Invisible
KlaviyoLeads
1 / 1 probes
100%
Excellent
Scale:NoneLowFairStrongExcellent

Probes run hourly; each (engine × query) combo retests every ~3 days.

Pricing

Postscript
Starting price
$0/mo
Free tier
Yes
postscript.io ↗
Klaviyo
Starting price
—
Free tier
Yes
klaviyo.com ↗

Key Features

Postscript
  • ✓Campaigns and automations, unlimited segments
  • ✓Dedicated toll-free number
  • ✓Subscriber acquisition tools
  • ✓Branded short link subdomain
Klaviyo
  • ✓Up to 250 profiles
  • ✓500 emails/month
  • ✓150 mobile message credits
  • ✓10,000 Composer credits
  • ✓Email support for 60 days
  • ✓Built-in reporting
  • ✓Basic automation
  • ✓Segmentation capabilities

When to choose Postscript

Choose Postscript if your team prioritizes its strengths over Klaviyo's. Full guidance populates as Postscript's feature data is indexed.

When to choose Klaviyo

Choose Klaviyo if your team prioritizes its strengths over Postscript's. Full guidance populates as Klaviyo's feature data is indexed.

AI visibility profiles

Is one of these your brand?

Get the full report by email: every email & sms marketing buyer question we ask, which engines name you, and who gets named instead.

Postscript

postscript.io

Klaviyo

klaviyo.com

Free check

Check any brand's AI visibility — free

We ask the buyer questions in this market across ChatGPT, Claude, Gemini, Perplexity and Copilot, and show you who gets named.

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