Sendgrid
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A cloud-based SMTP provider that allows you to send emails without having to maintain email servers
API Endpoint
https://docs.sendgrid.com/api-reference/More Email APIs
Email address validation
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Check a domain's SPF, DKIM, DMARC and MX with a graded shareable report
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Email for AI agents: programmatic inbox creation and send/receive over JMAP
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