Email Services
Transactional messages, delivery verification, and outbound campaigns.
Email services deliver operational notices, sign-in magic links, purchase receipts, and newsletters to your audience. When choosing an email layer, first separate transactional system emails from bulk marketing campaigns, so marketing traffic does not hurt your main domain's reputation. Developer platforms such as Resend offer clean REST APIs and SDKs for both transactional messages and marketing broadcasts, with deliverability monitoring. A frequent mistake is sending system emails from a default application host without DNS authentication records such as SPF, DKIM, and DMARC. Onboarding and password verification emails then get rejected or filtered into spam.
6 tools
Formspree
Backend form handling service for HTML forms that forwards submissions to email or appsEmail Services
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Kit
Creator marketing platform and REST API for automating workflows, managing email subscribers and delivering broadcastsEmail Services
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Resend
Email API and platform for creating, sending and tracking transactional emails using web frameworksEmail Services
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Mailgun
Email delivery and deliverability platform with REST APIs and SMTP to send, receive and track emailsEmail Services
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Postmark
Transactional email delivery service designed for web applicationsEmail Services
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SendGrid
Cloud-based email platform with REST APIs and SMTP relay for sending transactional and marketing emailsEmail Services
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