ContactLint
Validate email syntax, MX, disposable and role addresses with typo suggestions, plus phone numbers

Send transactional email over HTTPS with official JavaScript, Python and PHP SDKs.
MailChannels API is a free Email API that requires apiKey authentication, is served over HTTPS and does not support CORS, so it should be called from a server.
Online · 2088 msTested Nov 15, 2026 · checked dailyIs it down? Status & uptime
Give every customer, tenant, and AI agent its own sending identity, rate limits, and suspension path. One compromised sender never takes down your account.
Details from mailchannels.com.

Validate emails before they bounce
mailboxlayer checks syntax, MX records and SMTP, and flags disposable addresses, with a free plan to start.
Validate email syntax, MX, disposable and role addresses with typo suggestions, plus phone numbers
Stop spam signups: block disposable and invalid emails and suggest typo fixes. 500 free a month
Email verification: MX, disposable/free/role detection, typo fix and a keep/fix/drop action
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The MailChannels API is provided by MailChannels (mailchannels.com). Give every customer, tenant, and AI agent its own sending identity, rate limits, and suspension path. One compromised sender never takes down your account.
Yes. The MailChannels API is listed in the Email category of the public-apis directory, which only includes APIs that are free or have a free tier. Check its documentation for rate limits and paid plans.
Yes. The MailChannels API uses apiKey authentication, so you need to register for credentials before making requests.
Not directly. The MailChannels API does not allow CORS, so call it from a server, serverless function or proxy instead of front-end JavaScript.
Yes. The MailChannels API is served over HTTPS, so it's safe to use in production.
Show that MailChannels is listed on Public APIs. The badge displays its developer rating once it has one.
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