EmailQA vs MailTester

EmailQA helps teams review HTML emails by generating previews and collecting comments pinned to specific locations. Users can paste HTML or upload an.html file to create a shareable preview link. Emails render in Gmail, Outlook, and Apple Mail on real devices, with screenshots in light and dark modes. Reviewers can view and comment through a shared link without making an account. Teams can upload newer versions while retaining earlier feedback and comparing changes. Listed integrations include Mailchimp, Klaviyo, HubSpot, Constant Contact, ActiveCampaign, Campaign Monitor, ConvertKit, AWeber, Drip, and Figma. Email service provider connections use OAuth and read-only access; EmailQA says it reads templates without changing campaigns or accessing subscriber data. Slack can notify teams about comments, and users can reply in Slack threads. The REST API supports HTML uploads, real-device render requests, screenshots, and render-result webhooks; it is included in Business. The free plan is for individuals, Pro for teams and professionals, and Business for agencies and automation. Free is free; paid plans start at $20 a month. A 14-day trial is available.

MailTester checks why email may reach spam and returns a deliverability score out of 10. To run a test, generate a disposable address, send the message there and receive a report in seconds. Scoring starts at 10, subtracts points for detected issues, and explains penalties with suggested fixes. Authentication checks include SPF, DKIM, DMARC, domain alignment, reverse DNS and forward-confirmed reverse DNS. Sending IPs are checked against Spamhaus, SpamCop, Barracuda and other DNS blocklists. Content analysis covers HTML, text-to-image ratio, links, subject, List-Unsubscribe and Message-ID. Rspamd supplies a spam score and triggered rules. Newsletter checks include one-click List-Unsubscribe under RFC 8058, message size and text-image ratio. MailTester offers web, API and self-hosted platforms. Its API creates test addresses and reads report status and scores as JSON. The free plan costs nothing, needs no account and provides 25+ checks per test.