{"slug":"mailchannels-email-api","name":"MailChannels Email API","summary":"Transactional email service for platforms and developers, separate from MailChannels Outbound Filtering for hosting providers. Applications send mail over a REST API or SMTP, with delivery webhooks, templates, attachments, sub-accounts, and suppression lists. A free developer pla","publisher":"MailChannels","homepage":"https://www.mailchannels.com/pricing","kind":"app","hasApi":true,"hasMcp":false,"costRange":"freemium","costNotes":"Email API free plan is $0/month for up to 3,000 emails/month, capped at 100 emails/day, with no overages and up to 3 domains. Pay as You Grow is listed at $10.00/month for up to 10,000 emails/month, billed monthly, no overages, and up to 1,000 domains; the page also lists volume options of 50,000, 100,000, 200,000, 300,000, 500,000, 750,000, 1,000,000, and 1,500,000 emails/month but does not state each tier’s price. Custom pricing is contact-sales for 1,500,001+ emails/month. FAQ states there is no tier between the free plan and the 10,000/month paid plan, one send is counted per recipient (including deferred, rejected, or spam-marked attempts), delivery pauses when the plan limit is exceeded, and unused emails do not roll over. Open and click tracking and email support are described for paid or higher-volume plans (email support on 300,000+ plans). Dollar prices for Outbound Filtering (from $99.99/month) are a different product and are not Email API rates.","functions":["policy","search","auth","monitor","payment","test"],"slices":[{"functionId":"policy","label":"policy","note":"Inferred from executor","cost":"Unknown"},{"functionId":"search","label":"search","note":"Inferred from executor","cost":"Unknown"},{"functionId":"auth","label":"auth","note":"Inferred from executor","cost":"Unknown"},{"functionId":"monitor","label":"monitor","note":"Inferred from executor","cost":"Unknown"},{"functionId":"payment","label":"payment","note":"Inferred from executor","cost":"Unknown"},{"functionId":"test","label":"test","note":"Inferred from executor","cost":"Unknown"}],"interfaces":[{"kind":"http"}],"composabilityRationale":"The page states REST API and SMTP integrations plus webhooks and API documentation, so other software can send transactional email and receive delivery events over HTTP or SMTP. It does not declare an MCP server, agent tool interface, or tool-call protocol. SPF, DKIM, and DMARC are deliverability setup requirements, not a general identity provider. Whether higher volume-tier prices or dedicated-IP options exist beyond the truncated page text is unknown.","signals":[],"functionProbabilities":[{"functionId":"policy","value":0.8,"source":"https://www.mailchannels.com/pricing","method":"lexical","observedAt":"2026-10-19T01:29:32.613Z"},{"functionId":"search","value":0.8,"source":"https://www.mailchannels.com/pricing","method":"lexical","observedAt":"2026-10-19T01:29:32.613Z"},{"functionId":"auth","value":0.72,"source":"https://www.mailchannels.com/pricing","method":"lexical","observedAt":"2026-10-19T01:29:32.613Z"},{"functionId":"monitor","value":0.72,"source":"https://www.mailchannels.com/pricing","method":"lexical","observedAt":"2026-10-19T01:29:32.613Z"},{"functionId":"payment","value":0.72,"source":"https://www.mailchannels.com/pricing","method":"lexical","observedAt":"2026-10-19T01:29:32.613Z"},{"functionId":"test","value":0.72,"source":"https://www.mailchannels.com/pricing","method":"lexical","observedAt":"2026-10-19T01:29:32.613Z"}],"claimVerification":[{"key":"mcp","status":"unverified","asserted":"false","evidenceSource":"https://www.mailchannels.com/pricing","method":"fallback"},{"key":"api","status":"unverified","asserted":"true","evidenceSource":"https://www.mailchannels.com/pricing","method":"fallback"},{"key":"cost","status":"unverified","asserted":"freemium","evidenceSource":"https://www.mailchannels.com/pricing","method":"fallback"},{"key":"license","status":"unverified","asserted":"","evidenceSource":"https://www.mailchannels.com/pricing","method":"fallback"}],"tweets":[],"notes":[],"origin":"intake","createdAt":"2026-10-19T01:29:33.378Z","updatedAt":"2026-10-19T01:29:33.378Z","sources":[{"kind":"web","label":"executor","url":"https://www.mailchannels.com/pricing","excerpt":"# Two Products. Two Pricing Models. One Platform.\n\nOutbound Filtering protects hosting providers from customer-driven spam. Email API is for platforms, and developers sending transactional email.\n\nStarter\n\nFor hosts with fewer than 1,000 cu","at":"2026-10-19T01:29:33.378Z"}],"recordId":"cmp_mailchannels-email-api","claims":{"name":"MailChannels Email API","summary":"Transactional email service for platforms and developers, separate from MailChannels Outbound Filtering for hosting providers. Applications send mail over a REST API or SMTP, with delivery webhooks, templates, attachments, sub-accounts, and suppression lists. A free developer pla","kind":"app","publisher":"MailChannels","homepage":"https://www.mailchannels.com/pricing","costRange":"freemium","costNotes":"Email API free plan is $0/month for up to 3,000 emails/month, capped at 100 emails/day, with no overages and up to 3 domains. Pay as You Grow is listed at $10.00/month for up to 10,000 emails/month, billed monthly, no overages, and up to 1,000 domains; the page also lists volume options of 50,000, 100,000, 200,000, 300,000, 500,000, 750,000, 1,000,000, and 1,500,000 emails/month but does not state each tier’s price. Custom pricing is contact-sales for 1,500,001+ emails/month. FAQ states there is no tier between the free plan and the 10,000/month paid plan, one send is counted per recipient (including deferred, rejected, or spam-marked attempts), delivery pauses when the plan limit is exceeded, and unused emails do not roll over. Open and click tracking and email support are described for paid or higher-volume plans (email support on 300,000+ plans). Dollar prices for Outbound Filtering (from $99.99/month) are a different product and are not Email API rates.","functions":["policy","search","auth","monitor","payment","test"],"slices":[{"functionId":"policy","label":"policy","note":"Inferred from executor","cost":"Unknown"},{"functionId":"search","label":"search","note":"Inferred from executor","cost":"Unknown"},{"functionId":"auth","label":"auth","note":"Inferred from executor","cost":"Unknown"},{"functionId":"monitor","label":"monitor","note":"Inferred from executor","cost":"Unknown"},{"functionId":"payment","label":"payment","note":"Inferred from executor","cost":"Unknown"},{"functionId":"test","label":"test","note":"Inferred from executor","cost":"Unknown"}],"interfaces":[{"kind":"http"}],"composabilityRationale":"The page states REST API and SMTP integrations plus webhooks and API documentation, so other software can send transactional email and receive delivery events over HTTP or SMTP. It does not declare an MCP server, agent tool interface, or tool-call protocol. SPF, DKIM, and DMARC are deliverability setup requirements, not a general identity provider. Whether higher volume-tier prices or dedicated-IP options exist beyond the truncated page text is unknown."},"relations":[{"from":"mailchannels-email-api","to":"amazon-simple-email-service-ses","kind":"fills-same-slot-as","note":"Shared functions auth, monitor, payment, search, test. Can fill the same function slot."},{"from":"mailchannels-email-api","to":"postgresql","kind":"fills-same-slot-as","note":"Shared functions policy, test. Can fill the same function slot."},{"from":"mailchannels-email-api","to":"rtk","kind":"fills-same-slot-as","note":"Shared functions search, test. Can fill the same function slot."},{"from":"mailchannels-email-api","to":"ai-agent-sandbox-comparison-2026-seven-platforms","kind":"fills-same-slot-as","note":"Shared functions auth, policy, test. Can fill the same function slot."},{"from":"mailchannels-email-api","to":"mail-worker","kind":"fills-same-slot-as","note":"Shared functions auth, test. Can fill the same function slot."},{"from":"mailchannels-email-api","to":"best-code-execution-sandbox-for-openhands-in-2026","kind":"fills-same-slot-as","note":"Shared functions search, test. Can fill the same function slot."},{"from":"mailchannels-email-api","to":"how-hopx-achieves-100ms-cold-starts","kind":"fills-same-slot-as","note":"Shared functions auth, monitor. Can fill the same function slot."},{"from":"mailchannels-email-api","to":"e2b-vs-daytona-vs-blaxel-ai-sandbox-comparison","kind":"fills-same-slot-as","note":"Shared functions payment, test. Can fill the same function slot."}],"explain":{"score":9,"formula":"100 × sum(weight × value) over observed factors only. Unobserved factors are omitted, not zeroed.","factors":[{"id":"github_health","label":"GitHub health","weight":0.18,"why":"insufficient evidence","sources":[],"evidence":"insufficient"},{"id":"agent_use","label":"Agent use","weight":0.16,"why":"insufficient evidence","sources":[],"evidence":"insufficient"},{"id":"human_notes","label":"Human notes","weight":0.14,"why":"insufficient evidence","sources":[],"evidence":"insufficient"},{"id":"composability","label":"Composability","weight":0.16,"why":"insufficient evidence","sources":[],"evidence":"insufficient"},{"id":"checklist","label":"Checklist","weight":0.1,"value":0.6666666666666666,"contribution":0.06666666666666667,"why":"No MCP surface is declared. An API is declared. Cost is freemium. 2 of 3 checklist fields are complete.","sources":[],"evidence":"observed"},{"id":"evidence_quality","label":"Evidence quality","weight":0.14,"value":0.18107144632819594,"contribution":0.025350002485947435,"why":"1 sources cover 1 evidence types. The latest dated evidence is 2026-10-19. Freshness is omitted unless observed as a signal.","sources":[{"kind":"web","label":"executor","url":"https://www.mailchannels.com/pricing","excerpt":"# Two Products. Two Pricing Models. One Platform.\n\nOutbound Filtering protects hosting providers from customer-driven spam. Email API is for platforms, and developers sending transactional email.\n\nStarter\n\nFor hosts with fewer than 1,000 cu","at":"2026-10-19T01:29:33.378Z"}],"evidence":"observed"},{"id":"benchmark","label":"Benchmarks","weight":0.12,"why":"insufficient evidence","sources":[],"evidence":"insufficient"}],"missing":["GitHub health: insufficient evidence","Agent use: insufficient evidence","Human notes: insufficient evidence","Composability: insufficient evidence","Benchmarks: insufficient evidence"]},"score":9}