Klaviyo vs Omnisend vs Mailchimp vs Brevo

Written head to head: Mailchimp vs Klaviyo · Mailchimp vs Brevo · Klaviyo vs Omnisend, with when to choose each side.

Compared on	Klaviyo Free plan · from $20/mo VisitRemove	Omnisend Free plan · from $16/mo VisitRemove	Mailchimp Free plan · from $13/mo VisitRemove	Brevo Free plan · from $8.08/mo VisitRemove
What it is	B2C CRM for ecommerce email and SMS, billed by active profiles, with a free plan and the Composer AI agent	Email, SMS and push marketing for ecommerce stores, with a free plan for 250 contacts and 24/7 support	Intuit's email and SMS marketing platform, free for 250 contacts, with AI writing on Standard and Premium	Email, SMS and WhatsApp marketing, formerly Sendinblue, priced by email volume with a free 300-a-day plan
Free plan	Up to 250 active profiles and 500 email sends a month; $5 of mobile messages and $5 of Composer usage a month; web forms, templates, segmentation, flows and reporting; Klaviyo logo stays on emails; email support for the first 60 days only. Sending is blocked once either limit is exceeded until you upgrade.	500 emails a month to up to 250 contacts; 500 web push notifications; the FAQ says the free plan includes the features of paid plans, such as automation, segmentation and forms, within those limits; 24/7 live chat and email support	Up to 250 contacts; 500 email sends a month with no more than 250 a day; 1 user seat and 1 audience; limited pre-built templates; no automation flows, email scheduling or A/B testing; Mailchimp branding stays on; email support for the first 30 days only. Sending pauses if the contact or send limit is exceeded.	300 emails a day; up to 100,000 contacts; 1 user; automation limited to 2,000 contacts; Brevo branding on emails; AI content generator, forms, segmentation, transactional email and SMS campaigns (credits paid) included; email support. No credit card needed.
Cheapest paid plan	$20/mo (Email)Klaviyo pricing	$16/mo (Standard)Omnisend pricing	$13/mo (Essentials)Mailchimp pricing	$8.08/mo billed annually (Starter)Brevo pricing
What it covers	For 500 active profiles with 5,000 emails a month. The price rises with active profiles, and accounts move to a profile-compliant tier automatically as they grow. A limited-time offer takes $19 off the first month at 500 profiles. No annual price is listed.	For up to 500 contacts; email sends are 12x the list size (6,000 a month at 500 contacts); Essential AI (Forms AI and Reports AI). No annual plan is listed; paying 3 months upfront saves 30%. Subscribers and non-subscribers who received automated messages are billed; unsubscribed contacts are not.	Starting price for the 0-500 contacts tier; email sends up to 10x the contact count (5,000 a month at 500 contacts); 3 user seats. The price rises with the contact tier, up to $385/month for 50,000 contacts. Overages are billed if contact or send limits are exceeded. Annual plans exist only for Standard and Premium at 10,000+ contacts, through sales.	5,000 emails a month and 500 contacts; 1 user; $97 billed yearly (10% off). Removing the Brevo logo costs $12 a month extra on Starter. The price rises with email volume, up to 100,000 emails a month on Starter.
Free trial	None stated	None stated	14-day free trial of Essentials or Standard (payment details required at sign-up); a 1-month Premium trial for qualified new customers through sales	None stated
Platforms	Web, API	Web, API	Web, iOS, Android, API	Web, API
Integrations (vendor's figure)	350+ integrations including Shopify, WooCommerce, BigCommerce, Wix, ChatGPT and Claude	305+ pre-built integrations including Shopify, Shopify Plus, BigCommerce and WooCommerce	300+ integrations including Shopify, WooCommerce, Canva, Zapier, Square, Stripe and Salesforce	150+ integrations including Shopify, WordPress, Stripe and Zapier
Open source	No	No	No	No
Good for	Ecommerce brands on Shopify or WooCommerce running behavior-triggered email flows Combining email, SMS and WhatsApp marketing on one customer profile Using an AI agent to draft and launch campaigns from store data	Shopify and BigCommerce stores automating abandoned cart and post-purchase emails Ecommerce brands combining email, SMS and push in one workflow Stores moving from another email platform with a free migration	Small businesses sending regular newsletters to a few thousand contacts Ecommerce stores that want automated flows tied to Shopify or WooCommerce data Trying email marketing free with a list under 250 contacts	Businesses with large contact lists that send infrequently Combining marketing email with transactional email and SMS in one account Starting free with automation for a list under 2,000 contacts
Watch out for	The free plan stops at 250 active profiles and 500 email sends a month Generative AI, predictive analytics and logo removal need a paid plan SMS, Composer usage beyond the free allowance, Customer Hub, Social and Reviews cost extra	The free plan allows only 500 emails a month to 250 contacts Standard caps sends at 12x the list size Pro starts at the 2,500-contact tier; the pricing page sells SMS credits on Pro and does not describe SMS pricing for Standard	The free plan stops at 250 contacts and 500 sends a month, with no automation flows or scheduling Essentials automation flows are limited to 4 steps; generative AI features need Standard or Premium Overage charges apply on paid plans when contact or send limits are exceeded	The free plan is capped at 300 emails a day and keeps Brevo branding Free and Starter limit automation to 2,000 contacts; A/B testing and send time optimization start on Standard WhatsApp, pop-ups and mobile push need Professional, which starts at $499 a month
Made by	Klaviyo, Inc.	Omnisend, UAB	The Rocket Science Group LLC d/b/a Mailchimp (part of Intuit)	Brevo SAS (formerly Sendinblue)

Entry prices are the cheapest paid plan, as each vendor publishes it; “What it covers” says what that price is per (a user, a channel, a brand, a number of contacts). The sources are listed on each tool's page.

Every tool in email marketing tools is on its category page, with the written head-to-heads on Compare.