Founded in 2015 in London, UK, Mailosaur is an automated email and SMS testing platform for developers. It provides dedicated test inboxes, Spam Score analysis, HTML/CSS rendering validation, and API integration to automate email and SMS verification in CI/CD pipelines.
Mail Tester is a free online email scoring tool. Send a test email to get a 0-10 quality report covering SPF/DKIM/DMARC configuration, blacklist status, spam keyword detection, and HTML content analysis.
GlockApps is a US-based email deliverability testing platform founded in 2015, offering inbox placement detection, DMARC/SPF/DKIM analysis, spam scoring, and blacklist monitoring across 120+ sources.