MailRambo

Verify email deliverability with a strict yes/no, disposable and catch-all detection

Official docs outline

Extra Credit builds an outline of MailRambo's docs the first time your work uses it. Until then, start at the official documentation.

mailboxlayer Email address validation
MailboxValidator Validate email address to improve deliverability
MailChannels Send transactional email over HTTPS with official JavaScript, Python and PHP SDKs
MailCheck.ai Prevent users to sign up with temporary email addresses
mailfloss Stop spam signups: block disposable and invalid emails and suggest typo fixes. 500 free a month
Mailfornet Disposable inboxes for end-to-end signup tests, with long-polling and HMAC-signed webhooks
MailSenpai DNS Check Check a domain's SPF, DKIM, DMARC and MX records and get what to fix, with the values to publish
Mailtrap Email API and SMTP for sending transactional and bulk emails, with email testing sandbox for safe development
Nitrosend Send marketing and transactional email; manage contacts, segments and flows
PostStack EU-hosted email API for transactional and marketing email, with contacts, broadcasts, and analytics
RankFabrik Verify Validate email addresses for deliverability, syntax and disposable detection
Sendinblue A service that provides solutions relating to marketing and/or transactional email and/or SMS