Mailjet vs Substack: Newsletter Platforms Comparison (2026)

An independent side-by-side comparison of Mailjet and Substack for newsletter platforms 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 newsletter platforms questions. Last 90 days across ChatGPT, Perplexity, Gemini, Claude, and Copilot.

Too early to call — probes still building data.
ChatGPT
Mailjet
Tracking…
No data yet
Substack
1 / 1 probes
100%
Excellent
Perplexity
Mailjet
Tracking…
No data yet
Substack
1 / 1 probes
100%
Excellent
Gemini
Mailjet
Tracking…
No data yet
Substack
1 / 1 probes
100%
Excellent
Claude
Mailjet
Tracking…
No data yet
Substack
1 / 1 probes
100%
Excellent
Copilot
Mailjet
Tracking…
No data yet
Substack
1 / 1 probes
100%
Excellent
Scale:NoneLowFairStrongExcellent

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

Pricing

Mailjet
Starting price
$9/month
Free tier
Yes
mailjet.com ↗
Substack
Starting price
—
Free tier
Yes
substack.com ↗

Key Features

Mailjet
  • ✓1,000 contacts
  • ✓APIs, SMTP Relay, Webhooks
  • ✓Advanced Email Editor
  • ✓Email Tracking Consent
  • ✓Basic Statistics
  • ✓Form Builder
  • ✓Online support
  • ✓Automations
Substack
  • ✓Monetization options for creators
  • ✓Customizable newsletters
  • ✓Podcast hosting
  • ✓Audience growth tools
  • ✓Live video capabilities
  • ✓Analytics dashboard
  • ✓Content scheduling
  • ✓Community engagement features

When to choose Mailjet

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

When to choose Substack

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

AI visibility profiles

Is one of these your brand?

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

Mailjet

mailjet.com

Substack

substack.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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