whats-best.ai

Email Marketing & Newsletter · head-to-head

Klaviyo vs Mailchimp

Klaviyo

Rest of world

Panel rating

Sovereignty: not determined

Full evaluation →

Mailchimp

Rest of world

Panel rating

Sovereignty: 1 of 4 dimensions proven

Full evaluation →

The short answer

Mailchimp holds the higher mean on campaign and automation (7.0 vs 6.0; 5 judges lean Mailchimp, 1 tie), deliverability (6.8 vs 3.8; 6 lean Mailchimp), list data control (7.0 vs 4.7; 6 lean Mailchimp), integrations (7.7 vs 5.8; 5 lean Mailchimp, 1 tie) and pricing transparency (5.3 vs 2.0; 6 lean Mailchimp). Klaviyo's higher mean is sovereignty, 1.8 vs 1.5, with 2 judges leaning Klaviyo, 0 leaning Mailchimp and 4 ties; Klaviyo's data residency reads EU optional against Mailchimp's US default. Consent and proof is the genuine split: 5.2 vs 5.5 with 3 judges leaning each way. The weighted totals the table lists — CRM manager 5 vs 6.7, deliverability engineer 5.2 vs 6.3, data-protection officer 3.8 vs 4.6, integrator 4.3 vs 6.2, skeptic 3.3 vs 5.7 — put the higher figure on Mailchimp's side. No overall winner is declared: the lean differs by criterion, and that difference is the answer.

Choose Klaviyo if

  • You need the option to keep contact data in the EU — Klaviyo's data residency is recorded as EU optional, Mailchimp's as US default.
  • Your contract terms must allow hosting wherever the vendor or its subprocessors maintain facilities — Klaviyo's processing agreement permits that, while Mailchimp's captured pages show US hosting as the fixed default with no EU option on those pages.
  • You weight sovereignty heavily in your scoring — Klaviyo's sovereignty mean is 1.8 against Mailchimp's 1.5, with 2 judges leaning Klaviyo, 0 leaning Mailchimp and 4 ties.
  • Your legal screen flags vendors whose subprocessor exposure is recorded as US Cloud Act — Mailchimp's attribute reads US Cloud Act; Klaviyo's is recorded as unknown.

Choose Mailchimp if

  • You need deliverability you can check before committing — deliverability means run 6.8 vs 3.8, with 6 judges leaning Mailchimp and 0 leaning Klaviyo.
  • You must be able to take your whole list with you — Mailchimp documents a whole-account export as a zip, and list data control runs 7.0 vs 4.7 with 6 judges leaning Mailchimp.
  • You need published plan prices before signing — the captured Klaviyo pages state no paid prices, only scaling by contact count and channels with a custom enterprise quote; pricing transparency runs 5.3 vs 2.0 with 6 judges leaning Mailchimp.
  • Your stack runs on Salesforce — Mailchimp states a two-way Salesforce sync among its 300+ integrations, and integrations leans 5 judges to Mailchimp with 1 tie.
  • You build branching customer journeys — Mailchimp's journey builder offers conditional and percentage splits, and campaign and automation runs 7.0 vs 6.0 with 5 judges leaning Mailchimp and 1 tie.

Read this comparison as one judge. Each weighs the same scores by what they care about.

The bench's picks

Same scores, different priorities: each judge's weighting applied to both products. The split is the finding.

Criterion by criterion

Criterion Klaviyo Mailchimp The bench leans
Campaigns & automation Mailchimp, 5 of 6 judges
Deliverability infrastructure Mailchimp, 6 of 6 judges
Consent, proof & tracking limits split 3–3
List ownership, import & exit Mailchimp, 6 of 6 judges
Integrations & API Mailchimp, 5 of 6 judges
European sovereignty Klaviyo, 2 of 6 judges
Pricing transparency Mailchimp, 6 of 6 judges

Stars show the bench average per criterion; the lean counts which product each judge scored higher. Open a judge's tab for their reasoning on both sides.

Sovereignty, side by side

Dimension Klaviyo Mailchimp
Legal entity Not determined Not determined
Ownership Not determined Foreign-controlled
Data residency Not determined Not determined
Subprocessors Not determined Not determined

Facts, side by side

Only facts both products carry under the same definition — anything else would not be a fair row.

Compliance · GDPR Datenverarbeiter · yes1

captured 5 Oct 2026 · Report an error

yes2

captured 28 Sep 2026 · Report an error

Compliance · Processor role data_processor · Customer Data processed on behalf and under instruction of the customer3

captured 28 Sep 2026 · Report an error

controller · processor4

captured 5 Oct 2026 · Report an error

Data · Retention data stored as long as needed in account, deleted on request5

captured 5 Oct 2026 · Report an error

as long as necessary · yes6

captured 5 Oct 2026 · Report an error

Integrations · Count 350+7

captured 5 Oct 2026 · Report an error

300 · yes8

captured 5 Oct 2026 · Report an error

Legal · Entity Klaviyo, Inc. and its affiliates3

captured 28 Sep 2026 · Report an error

Intuit Inc. · Intuit Inc. and the Intuit group companies6

captured 5 Oct 2026 · Report an error

Pricing · Free tier yes9

captured 16 Sep 2026 · Report an error

Free · yes · 25010

captured 28 Sep 2026 · Report an error

Pricing · Free tier available yes11

captured 28 Sep 2026 · Report an error

kostenloser Free-Tarif12

captured 16 Sep 2026 · Report an error