What is marketing automation?
Quick Answer: Marketing automation is the use of software to execute, manage, and measure marketing campaigns across email, SMS, social media, and advertising channels based on audience behavior and predefined rules. As of April 2026, HubSpot, Mailchimp, and Customer.io are the leading marketing automation platforms.
What is Marketing Automation?
Marketing automation uses software to manage multi-channel marketing campaigns at scale. Instead of manually sending emails, segmenting audiences, and scheduling social posts, marketing automation platforms execute campaigns based on user behavior, time-based triggers, and audience attributes.
How It Works
Marketing automation platforms operate across three layers:
- Data collection: Track user behavior (website visits, email opens, purchases, form submissions)
- Segmentation: Group users by behavior, demographics, lifecycle stage, or custom attributes
- Execution: Send targeted messages (email, SMS, push, in-app) based on segment membership and behavioral triggers
Common Marketing Automations
| Automation | Trigger | Action | Impact |
|---|---|---|---|
| Welcome series | New subscriber | 5-email onboarding sequence | 50% higher engagement vs single email |
| Cart abandonment | Item added, no purchase in 1 hr | Reminder email + SMS | Recovers 5-15% of abandoned carts |
| Lead nurturing | Downloaded whitepaper | Drip campaign over 4 weeks | Moves leads to sales-ready 3x faster |
| Re-engagement | No activity for 90 days | Winback email with offer | Reactivates 3-8% of dormant subscribers |
| Post-purchase | Order confirmed | Cross-sell email after 7 days | 10-20% of post-purchase emails convert |
Leading Marketing Automation Platforms
- HubSpot Marketing Hub: All-in-one with email, landing pages, social, and ads
- Mailchimp: Most widely adopted with 12 million+ users and broad template library
- Customer.io: Event-driven behavioral messaging for SaaS and ecommerce
- Brevo: Budget-friendly multi-channel (email, SMS, WhatsApp)
- ActiveCampaign: Combined email marketing and CRM for small businesses
Benefits
Marketing automation enables personalized communication at scale, reduces manual campaign management time by an estimated 12-15 hours per week for a mid-size marketing team, improves conversion rates through behavioral targeting, and provides attribution data connecting marketing efforts to revenue.
Related Questions
Related Tools
ActiveCampaign
Email marketing, marketing automation, and CRM tools you will actually use
Email AutomationConstant Contact
Email marketing platform since 1995 with drag-and-drop editor, automations, landing pages, and social media marketing.
Email AutomationConvertKit (Kit)
Creator-focused email marketing platform with visual automations, landing pages, and digital commerce features.
Email AutomationDrip
Ecommerce email and SMS marketing platform with visual workflows, revenue attribution, and deep Shopify integration.
Email AutomationRelated Rankings
Best Email Automation Tools in 2026
A ranked list of the best email automation tools in 2026. This ranking evaluates platforms across deliverability, automation depth, template quality, analytics capabilities, and pricing value. The ranking includes transactional email APIs (SendGrid), ecommerce-focused platforms (Klaviyo), creator-oriented tools (ConvertKit), multi-channel marketing suites (Brevo, Customer.io), and the most widely adopted email platform (Mailchimp). Tools with fallback entries use ActiveCampaign where a primary tool slug is unavailable.
Best Marketing Automation Platforms 2026
Our definitive ranking of the best marketing automation platforms for 2026, scored on automation depth, deliverability, pricing value, and integration breadth.
Dive Deeper
Resend vs SendGrid vs Postmark 2026: Email API Compared
Resend (2023) is a React-template developer-first email API with 3,000 free emails/month and $20/month for 50K. SendGrid (2009, Twilio) is the high-scale market leader with marketing plus transactional at $19.95/month entry. Postmark (2010, ActiveCampaign) is the deliverability specialist for transactional-only at $15/month for 10K. This 2026 three-way comparison covers DX, deliverability, pricing, and feature breadth.
How to Automate Customer Onboarding Emails with Klaviyo
A tutorial for building a 5-email customer onboarding sequence in Klaviyo. Covers trigger configuration, email content strategy for each stage (welcome, quick win, feature discovery, social proof, feedback), conditional splits, A/B testing, and performance monitoring with data from a 12,000-subscriber DTC deployment.
Drip vs Klaviyo: Complete Comparison (2026)
A comparison of Drip and Klaviyo for ecommerce email marketing in 2026. Drip offers simpler automation at 35% lower cost for small lists (2,500 contacts). Klaviyo provides predictive analytics, SMS, and deeper Shopify integration with prices converging at 10,000+ contacts. Includes revenue attribution data from migrations.