SoftwareGlimpse

Customer.io vs Mailjet

Compare Customer.io and Mailjet on features, pricing, and buyer fit using the same researched criteria.

Independently recommendedLast updated Aug 18, 20264 evidence sourcesHow we compare
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Customer.io logo

Customer.io

7.1/10

Product-led event-driven messaging across email, push, SMS, and in-app — MAP-adjacent to classic ESPs.

Best for

  • • Product-led teams sending event-driven multi-channel messages
  • • SaaS/apps needing behavioral onboarding and lifecycle messaging
  • • Teams comparing Braze-class engagement with a mid-market entry

Starting from $100.00/user/mo

No free plan

Visit Customer.io
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VS

Our verdict

Our verdict

No universal winner

There is no universal winner between Customer.io and Mailjet. Choose Customer.io when Product-led teams sending event-driven multi-channel messages. Choose Mailjet when EU/SMB teams needing marketing + transactional email in one vendor. Criterion scores come from approved SoftwareGlimpse editorial assessments and first-party research — not hands-on lab testing.

Customer.io is better for

  • ✓ Automation
  • ✓ Segmentation
  • ✓ Analytics
  • ✓ Integrations

Mailjet is better for

  • ✓ Landing pages

Tie

  • • Templates

Choose Customer.io if: Product-led teams sending event-driven multi-channel messages

Choose Mailjet if: EU/SMB teams needing marketing + transactional email in one vendor

See detailed comparison ↓
Mailjet logo

Mailjet

6.9/10

EU-friendly email platform for marketing and transactional sending with send-volume pricing (Sinch).

Best for

  • • EU/SMB teams needing marketing + transactional email in one vendor
  • • Developers wanting API/SMTP alongside campaigns
  • • Buyers comparing send-volume pricing vs contact-tier ESPs

Starting from $9.00/user/mo

Free plan available

Visit Mailjet
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Comparison scorecard

Criterion-by-criterion results for Customer.io and Mailjet. Numeric bars appear only when both products have approved scores.

  • Starting pricing

    Published floor price and what that floor actually includes.

    Depends

    Customer.io researched starting price from $100/mo; Mailjet researched starting price from $9/mo; a free plan is researched. Contact-based packaging can change the real TCO.

    Customer.ioDepends
    MailjetDepends

  • Contact / subscriber limits

    How contact or subscriber caps affect plan cost.

    Depends

    Contact and profile limits for Customer.io and Mailjet should be confirmed on live vendor pricing — current research records plan models, not a universal cheaper winner.

    Customer.ioDepends
    MailjetDepends

  • Email send limits

    Monthly send caps and overage behavior.

    Depends

    Email send limits depend on plan rungs for Customer.io and Mailjet. Confirm current send and automation caps before purchase.

    Customer.ioDepends
    MailjetDepends

  • Automation

    Journey, drip, and workflow automation depth.

    Customer.io

    Customer.io leads on automation (9/10 vs 7/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.

    Customer.io9/10
    Mailjet7/10

  • Templates

    Email template quality and starting points.

    Tie

    Customer.io and Mailjet are close on templates (7/10 vs 7/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.

    Customer.ioTie
    MailjetTie

  • Segmentation

    Audience, behavior, and list segmentation depth.

    Customer.io

    Customer.io leads on segmentation (8/10 vs 6/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.

    Customer.io8/10
    Mailjet6/10

  • Landing pages

    Native landing-page or form builders.

    Mailjet

    Stronger landing pages availability

    Customer.ioWeaker
    MailjetStronger

  • Analytics

    Campaign, conversation, or workforce reporting depth.

    Customer.io

    Customer.io leads on analytics (7/10 vs 6/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.

    Customer.io7/10
    Mailjet6/10

  • Integrations

    Important third-party integrations.

    Customer.io

    Customer.io leads on integrations (8/10 vs 7/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.

    Customer.io8/10
    Mailjet7/10

  • AI features

    Useful AI for the primary job — not marketing fluff.

    Customer.io

    Customer.io leads on ai features (7/10 vs 6/10) from approved SoftwareGlimpse editorial assessments — not hands-on lab testing.

    Customer.io7/10
    Mailjet6/10

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Affiliate disclosure: some links may be affiliate links. We may earn a commission at no extra cost to you. Rankings and scores are never based on commission. Full disclosure

Methodology disclosure: scores and recommendations follow SoftwareGlimpse evaluation criteria (version 1.0.0). Affiliate relationships do not determine rankings.

How we recommend: product claims are tied to recorded research where available.

AI-assisted disclosure: drafts may be AI-assisted from approved facts and assessments. Humans approve publishable editorial judgments. AI does not invent live prices or claim hands-on testing.