Constant Contact vs Klaviyo

Constant Contact and Klaviyo are both marketing options. Here's how they compare on official platforms, features, and positioning — sourced from each vendor's own site, not from ratings or reviews.

Side-by-side summary

ComparingConstant ContactKlaviyo

CategoryMarketingMarketing

Alternatives tracked32

PlatformsWeb, iOS, AndroidWeb

Best for Constant Contact

Positioned for small businesses that want an easy-to-use platform for email and SMS marketing, sign-up forms, and landing pages without needing a dedicated marketing team.

Best for Klaviyo

Positioned for consumer/B2C brands, especially e-commerce retailers, plus enterprise brands, restaurants, and wellness companies wanting to consolidate a fragmented marketing tech stack.

Feature comparison

Every feature listed here comes directly from each vendor's own official site.

Constant Contact

Automated email sends for events like welcomes, birthdays, and re-sends to non-openers
SMS marketing with automated VIP alerts, abandoned-cart reminders, and event updates
Custom automation paths with branching and triggered actions
Website sign-up forms, pop-ups, and lead-generation landing pages
Real-time performance tracking and reporting
Integrations with popular CRMs and e-commerce platforms to sync contacts and orders

Klaviyo

Composer: AI agent that audits and generates on-brand campaigns/flows from prompts
Customer Agent: AI customer service that autonomously resolves a majority of inquiries
Omnichannel marketing (email, SMS, RCS, WhatsApp, mobile push, social)
Klaviyo Data Platform for unified customer profiles/events
Real-time marketing analytics and omnichannel attribution
Customer Hub & Helpdesk for self-service support

Pros and cons

Constant Contact

Pros

Automated email sends for events like welcomes, birthdays, and re-sends to non-openers
SMS marketing with automated VIP alerts, abandoned-cart reminders, and event updates
Custom automation paths with branching and triggered actions
Website sign-up forms, pop-ups, and lead-generation landing pages
Real-time performance tracking and reporting
Integrations with popular CRMs and e-commerce platforms to sync contacts and orders

Cons

We don't publish a "cons" list for either product. No vendor's official site documents its own product's weaknesses, so there's no sourced basis for one — and we'd rather say that plainly than invent one.

Klaviyo

Pros

Composer: AI agent that audits and generates on-brand campaigns/flows from prompts
Customer Agent: AI customer service that autonomously resolves a majority of inquiries
Omnichannel marketing (email, SMS, RCS, WhatsApp, mobile push, social)
Klaviyo Data Platform for unified customer profiles/events
Real-time marketing analytics and omnichannel attribution
Customer Hub & Helpdesk for self-service support

Cons

Key differences

Constant Contact lists Automated email sends for events like welcomes, birthdays, and re-sends to non-openers, SMS marketing with automated VIP alerts, abandoned-cart reminders, and event updates, Custom automation paths with branching and triggered actions, Website sign-up forms, pop-ups, and lead-generation landing pages, Real-time performance tracking and reporting, Integrations with popular CRMs and e-commerce platforms to sync contacts and orders that Klaviyo doesn't list.
Klaviyo lists Composer: AI agent that audits and generates on-brand campaigns/flows from prompts, Customer Agent: AI customer service that autonomously resolves a majority of inquiries, Omnichannel marketing (email, SMS, RCS, WhatsApp, mobile push, social), Klaviyo Data Platform for unified customer profiles/events, Real-time marketing analytics and omnichannel attribution, Customer Hub & Helpdesk for self-service support that Constant Contact doesn't list.
Constant Contact supports iOS, Android, which Klaviyo doesn't list.

Choose Constant Contact if…

Choose Constant Contact if this fits: Positioned for small businesses that want an easy-to-use platform for email and SMS marketing, sign-up forms, and landing pages without needing a dedicated marketing team.

Choose Klaviyo if…

Choose Klaviyo if this fits: Positioned for consumer/B2C brands, especially e-commerce retailers, plus enterprise brands, restaurants, and wellness companies wanting to consolidate a fragmented marketing tech stack.

Facts on this page are sourced from each vendor's official site (linked below), not from ratings or reviews. Products change — verify anything that matters to your decision directly on the vendor's own site before switching. See our Disclaimer and Sources Policy.