Constant Contact vs. Klaviyo

Last verified 28 days ago · 12 sources · Updated automatically

Constant Contact and Klaviyo compared across Company facts, Pricing, Campaigns & content, Automation & audience, Channels & deliverability and Platform & integrations — every fact sourced and re-verified from each vendor's public material.

Constant Contact

Established email marketing for small businesses and nonprofits — large template library, automations, and hands-on support.

Visit Constant Contact Full profile

Klaviyo

Email and SMS marketing built for ecommerce — deep store integration, behavioral segmentation, and revenue-attributed automations.

HQ Boston, MA

Visit Klaviyo Full profile

Attribute

Constant Contact

Klaviyo

Company facts

Headquarters

—

Boston, MA

Employees

—

2k 2,000+ employees (company-stated)

Pricing

Free Plan

Free up to 250 profiles / 500 email sends per month

Free Plan Contacts

—

250 250 profiles; 500 email sends/mo on free plan

Starting Monthly Price (USD)

—

$30 From ~$30/mo (email plan, entry profile tier)

Pricing Basis

contacts

contacts Priced by active profiles (with monthly send allowance per tier)

Campaigns & content

Drag-and-Drop Builder

Yes

Drag-and-drop email editor

Prebuilt Templates

Hundreds of email templates

160+ customizable email templates

A/B Testing

Subject-line A/B testing

A/B testing for campaigns and flows; Smart Send Time

Landing Pages

—

Built-in hosted landing-page builder (Klaviyo or custom domain)

AI Content Assistance

AI copy generator / AI campaign builder

Generative AI: subject lines, copy, Flows AI, Segment AI

Automation & audience

Automation Workflows

Automations gated/scaled by plan (e.g. 1 template on Lite)

Visual flow builder with triggers, branching, conditions

Advanced Segmentation

Contact/engagement segmentation; custom segments gated by plan

Behavior/data-driven segments across hundreds of data points

Signup Forms & Popups

Web signup forms and pop-ups

Pop-ups, fly-outs, embedded and multi-step forms

Built-in CRM

Sales CRM is a separate product (Lead Gen & CRM, ex-SharpSpring), not the core email plans

B2C 'CRM' = unified customer profiles/data platform, not a sales pipeline with deals/stages/tasks

Channels & deliverability

SMS Marketing

Premium includes 500 messages; Lite/Standard add-on from $10/mo

Native SMS campaigns and automations (metered via mobile credits)

Transactional Email

Transactional email via API-triggered transactional flows

Ecommerce Integration

Ecommerce automations, product blocks, store selling

Native Shopify/WooCommerce/BigCommerce; abandoned-cart flows, revenue attribution

Platform & integrations

Native Integrations

Integrations marketplace (Google, Microsoft, Facebook, Shopify, etc.)

350+ pre-built native integrations

Public API

Public v3 REST API

Public REST API with versioned endpoints and official SDKs

The verdict

Constant Contact

Best for a broad template library plus bundled SMS

Constant Contact ships hundreds of email templates against Klaviyo's 160+, and folds 500 SMS messages into its Premium plan rather than metering by credits. Note the gaps: no free plan, A/B testing limited to subject lines, and no transactional email.

Full profile

Klaviyo

Best for ecommerce and a free-plan on-ramp

Klaviyo adds what Constant Contact lacks: a free plan (250 profiles), transactional email, hosted landing pages, and A/B testing across both campaigns and flows. Ecommerce is deeper with abandoned-cart flows and revenue attribution, 350+ native integrations, and data-driven segmentation across hundreds of data points.

Full profile

Sources · 12 verified references

klaviyo.com constantcontact.com help.klaviyo.com developers.klaviyo.com developer.constantcontact.com

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