Klaviyo
klaviyo.com
Email and SMS built around e-commerce data
from $20/moFree plan
Resend
Developer-first email API
Free plan availableEmail MarketingSince 2023
from $20/moVisit resend.com
What Resend is
Modern transactional email API with React-based templates, a clean dashboard and SDKs for most stacks. Built by former Vercel engineers.
People use it to
Current offers
Free plan
Free plan, no card required
Ongoing free tier published by the vendor. Limits vary by plan.
Resend alternatives
Other tools in email marketing that cover similar ground. Full comparison.