Resend is a next-generation email sending API platform that stands out with modern developer experience and React Email integration, with a clean, type-safe API loved by frontend and backend developers.
Mailmeteor is a France-based Gmail mail merge and email tracking tool founded in 2015. It enables personalized bulk sending, email tracking, and analytics directly within the Gmail interface — a popular choice for cold email outreach.
Mailjet, founded in 2010 in Paris, France (now part of Sinchn/Pathwire), provides a unified transactional and marketing email API service trusted by 55,000+ customers, with 6,000 free emails/month and full GDPR compliance.
MailerSend is a UK-based developer email API platform founded in 2019, offering 12,000 free emails per month via SMTP and REST API.
Mailchimp Email is a leading email marketing platform offering drag-and-drop builder, marketing automation workflows, audience segmentation, and A/B testing to manage the full email marketing lifecycle.
HubSpot Email is the email marketing module within HubSpot CRM, offering drag-and-drop editing, automated journeys, and deep analytics through Marketing Hub for CRM-native customer outreach.
Elastic Email is a Canada-based email sending service founded in 2013, offering pay-as-you-go pricing with no minimums, dual API/SMTP support, and a free plan. Ideal for budget-conscious developers and small teams.
EmailOctopus, founded in 2015 in London, UK, specializes in ultra-low-cost email marketing powered by Amazon SES. Its free plan supports 2,500 subscribers at roughly 10x lower cost than Mailchimp.