1
Loops Free tier

Email platform built for SaaS with event-triggered emails and in-app messaging.

Free for 1K contacts · Free SaaS companies wanting email for product-led growth
Event Triggers Loops Segmentation Analytics
2
Beehiiv Free

Newsletter platform built for growth — with built-in referral programs, monetization, and analytics.

Free Newsletter creators focused on growth and monetization
Referral Program Ad Network Analytics Monetization
3
ConvertKit Free tier

Email marketing platform built for creators — newsletters, automations, and digital products.

Free for up to 1,000 subscribers · Paid from $25/mo Creators and solo businesses who want simple, powerful email
Sequences Automations Landing Pages Digital Products
4
Substack Free

Newsletter and publishing platform with built-in paid subscriptions.

Free Writers who want to monetize with paid subscriptions
Paid Subscriptions Discovery Network Podcasts Community
5
Plunk Free Open Source

Open-source email platform for transactional and marketing emails with automation.

Free Developers wanting open-source transactional email
Open Source Automations Transactional Analytics

Quick comparison: Resend vs Loops

Feature Resend Loops
Starting price Free Free

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