API archive entry · source-reported
Sendinblue
A service that provides solutions relating to marketing and/or transactional email and/or SMS
Other Email APIs
These records share a directory category and are ordered by similarity of reported access facts. They are a shortlist, not proof of drop-in compatibility.
B2B Email & Domain Scorer
Email verification: MX, disposable/free/role detection, typo fix and a keep/fix/drop action
API key · HTTPS reported · CORS Unknown
Sendinblue
A service that provides solutions relating to marketing and/or transactional email and/or SMS
API key · HTTPS reported · CORS Unknown
RankFabrik Verify
Validate email addresses for deliverability, syntax and disposable detection
API key · HTTPS reported · CORS Unknown
Atomic Mail
Email for AI agents: programmatic inbox creation and send/receive over JMAP
API key · HTTPS reported · CORS Unknown
ImprovMX
API for free email forwarding service
API key · HTTPS reported · CORS Unknown
mailboxlayer
Email address validation
API key · HTTPS reported · CORS Unknown
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Coverage
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Operating cost
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Integration risk
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Data rights
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Source reference
This page separates source-reported facts from questions that need live provider verification.