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Buttondown
4.7
•NEWSLETTER · CREATORSMinimalist, Markdown-first newsletter platform for writers and creators.
Free (up to 100 subs)
Free plan up to 100 subscribers
Markdown-first, distraction-free editing
Brevo
4.5
•SMS · CRMAll-in-one platform with unlimited contacts and SMS marketing.
Free Plan Available
Free plan with unlimited contacts (300 emails/day)
All-in-one CRM, SMS marketing & web chat
Top Choice
Resend
4.8
•API · DEVELOPEREmail API for developers. Built for modern apps.
Free (up to 1,000 subs)
Developer-first email API & SMTP service
React Email integration for code-driven templates
Postmark
4.7
•TRANSACTIONAL · APITransactional email API built for speed
From $15/mo (100 subs)
Lightning-fast transactional email API & SMTP
Separate streams for marketing and transactional mail
Loops
4.7
•SAAS · TRANSACTIONALEmail for SaaS products
Free (up to 1,000 subs)
SaaS email platform with modern workflow builder
Robust Stripe & API event-driven triggers
Customer.io
4.5
•BEHAVIORAL · PRODUCTBehavioral email automation for products
From $100/mo
Powerful behavioral triggers based on product events
Omnichannel outreach: Email, push, SMS & in-app
SendGrid
4.1
•API · SMTPEmail API and SMTP relay for developers
Free (up to 1,000 subs)
Free plan option available
SMTP relay & high-deliverability API
Mailgun
4
•API · SMTPPowerful email API for developers
From $5/mo
Starting paid tiers from $5/mo
SMTP relay & high-deliverability API
Amazon SES
3.9
•CHEAP · DEVELOPERLowest-cost email sending infrastructure
From $0.1/mo
Starting paid tiers from $0.1/mo
SMTP relay & high-deliverability API