Brevo vs Customer.io

Brevo, known as Sendinblue until its 2023 rebrand, is a French marketing and sales platform founded in Paris in 2012. It started with email marketing and transactional email and now covers SMS, WhatsApp campaigns, marketing automation, a sales CRM, live chat and landing pages, with a focus on small and mid-sized businesses.

Its pricing model is the main differentiator: marketing plans are based mainly on the volume of emails sent rather than the number of stored contacts, so companies with large but infrequently emailed lists pay much less than with contact-based tools. The free plan stores a large contact list but caps sending at 300 emails per day and adds Brevo branding. Starter removes the daily limit, Business adds marketing automation, A/B testing, send-time optimization and phone support, and Enterprise adds dedicated IPs, SSO, sub-accounts and service levels. Transactional email and SMS are also available through APIs, often used by developers for password resets and order notifications.

Brevo suits European SMBs, e-commerce stores and startups that want email, SMS and a light CRM in one place at a reasonable price, with GDPR-native data handling. Its template editor and automation builder are capable but less refined than the leaders. Mailchimp is more polished but costlier as lists grow, Klaviyo is stronger for Shopify-focused e-commerce, MailerLite is simpler and cheaper for newsletters, and ActiveCampaign offers deeper automation. For transactional email alone, Postmark or Amazon SES are more specialized.

Customer.io is a customer engagement platform founded in 2012 that sends automated messages based on what users actually do in a product. Instead of scheduled newsletters, teams send events and attributes from their app, and Customer.io triggers email, push notifications, in-app messages, SMS or webhooks when someone signs up, stalls in onboarding or stops using a feature.

The visual journey builder supports branches, waits, A/B tests, goals and exit conditions, and segments update in real time. Data Pipelines works as a built-in customer data platform that collects events and forwards them to other tools, and warehouse sync can pull audiences from Snowflake, BigQuery and similar stores. A transactional API covers receipts and password resets with the same templates. The Essentials plan starts at 100 dollars a month for 5,000 profiles; Premium and Enterprise add more workspaces, HIPAA support, dedicated IPs and services.

Customer.io fits product-led SaaS companies and mobile apps that have event data and engineers to send it. Teams sending simple newsletters to small lists pay more than they need to and will find MailerLite, Kit or Loops simpler. At the high end, Braze and Iterable offer more enterprise services and scale. The 2022 acquisition of Parcel, an email coding tool, strengthened its email design workflow, which had long been its weaker side.