How to verify an email address in Ruby

Verify whether an email address is real and deliverable, in real time, from Ruby, using the MailTester Ninja API. One HTTP call. Nothing is stored on our side.

Code

require "net/http"; require "json"

uri = URI("https://happy.mailtester.ninja/ninja")
uri.query = URI.encode_www_form(email: "someone@example.com", key: "YOUR_API_KEY")
data = JSON.parse(Net::HTTP.get(uri))
puts "#{data['code']} #{data['message']}" # ok Accepted

What you get back

`ok`	Accepted	the mailbox exists and accepts mail
`ko`	Rejected	invalid / undeliverable address
`mb`	Catch-All / uncertain	domain accepts everything, or temporary state

Get a free API key at mailtester.ninja/api. Prefer a quick manual check? Use the free domain analyzer.

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