B2B Email & Domain Scorer
Email verification: MX, disposable/free/role detection, typo fix and a keep/fix/drop action
Email · API key · HTTPS
Email APIs · Page 2
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Ordered by reported HTTPS, CORS support, no-auth access, then changed/observed facts. Access signals are not a popularity or quality score.
Nitrosend
Send marketing and transactional email; manage contacts, segments and flows
Email · API key · HTTPS
Disban
Classify email domains as disposable, free, alias, testing or parked to block fake signups
Email · API key · HTTPS
TempMailGrab
Disposable inboxes for email testing with OTP extraction and webhooks
Email · API key · HTTPS
Sendinblue
A service that provides solutions relating to marketing and/or transactional email and/or SMS
Email · API key · HTTPS
MailRambo
Verify email deliverability with a strict yes/no, disposable and catch-all detection
Email · API key · HTTPS
SendRaven
Email for AI agents: send email, receive replies as threads, with per-key send limits and approvals
Email · API key · HTTPS
Xeramail Temp Mail
Temp email address REST API for privacy, testing, automation with OTP extraction
Email · API key · HTTPS
RankFabrik Verify
Validate email addresses for deliverability, syntax and disposable detection
Email · API key · HTTPS
Atomic Mail
Email for AI agents: programmatic inbox creation and send/receive over JMAP
Email · API key · HTTPS
ImprovMX
API for free email forwarding service
Email · API key · HTTPS
inboxsink
Disposable inboxes for end-to-end tests that wait for the email and extract OTP codes
Email · API key · HTTPS
mailboxlayer
Email address validation
Email · API key · HTTPS
MailboxValidator
Validate email address to improve deliverability
Email · API key · HTTPS
Mailtrap
Email API and SMTP for sending transactional and bulk emails, with email testing sandbox for safe development
Email · API key · HTTPS
PostStack
EU-hosted email API for transactional and marketing email, with contacts, broadcasts, and analytics
Email · API key · HTTPS
Sendgrid
A cloud-based SMTP provider that allows you to send emails without having to maintain email servers
Email · API key · HTTPS
Sendinblue
A service that provides solutions relating to marketing and/or transactional email and/or SMS
Email · API key · HTTPS
uchecker
Bulk email verification with full SMTP server responses
Email · API key · HTTPS