Free email deliverability test. Enter a domain and get an instant deliverability score from a single check: SPF, DKIM, DMARC, MX records, and the major spam blocklists, all run in parallel from our London probe. Each category is graded pass, warning, or fail with a plain-language finding and a link to the full tool. The fastest way to see why your email lands in spam and what to fix first.
