Database

"Beehiiv: newsletter platform API, subscriber management, publications, posts/campaigns, automations, referral program, analytics, REST API"

"Buttondown: minimal newsletter API, subscribers, emails/drafts, tags, automations, webhooks, Markdown-first, REST API"

"ConvertKit (Kit): creator email platform, subscriber management, forms, sequences, broadcasts, tags, automations, commerce, REST API"

"Loops: email for SaaS, transactional + marketing, contacts, events, loops (automations), API sends, webhooks"

"Mailchimp: email marketing platform API, audience lists, campaigns, automations, segments, templates, analytics, REST API v3"

"MailerLite: email marketing platform API, subscriber groups, campaigns, automations, forms, analytics, REST API v2"

"Resend: developer-first email API, transactional and marketing emails, React Email templates, domains, audiences, broadcasts, REST API"

"Substack: newsletter publishing platform, post management, subscriber import/export, custom domains, paid subscriptions, RSS feed integration"