An email deliverability check is the process of testing whether your emails are landing in the primary inbox, the spam folder, or getting blocked entirely.
Deliverability checks are a proactive measure to diagnose sending issues *before* you launch a campaign.
Results provide a snapshot of your reputation at a specific moment; consistent testing is required to maintain domain health.
An email deliverability check is a diagnostic test to see where your emails land. Instead of sending a campaign and hoping for the best, you send a test email to a 'seed list' of inboxes controlled by a testing service (like GlockApps or Mail-tester.com). The service then reports back on inbox placement, spam scores, and potential blocklist issues.
This isn't about checking if an email address is valid; it's about verifying that your sending infrastructure—your domain, inbox, and IP—has a good enough reputation to bypass spam filters at major providers like Google and Microsoft.
An email deliverability check is a diagnostic test to see where your emails land. Instead of sending a campaign and hoping for the best, you send a test email to a 'seed list' of inboxes controlled by a testing service (like GlockApps or Mail-tester.com). The service then reports back on inbox placement, spam scores, and potential blocklist issues.
This isn't about checking if an email address is valid; it's about verifying that your sending infrastructure—your domain, inbox, and IP—has a good enough reputation to bypass spam filters at major providers like Google and Microsoft.
Guessing about your deliverability is a fast way to burn through domains and kill your pipeline. Regular checks are non-negotiable for serious teams.
A proper test is more than just sending an email to your personal Gmail account. Follow a structured process to get accurate data.
SPF, DKIM, and DMARC records are set up correctly. A simple DNS error is a common and easily fixable cause of poor deliverability."Hello, test" message. Use the exact subject line, body copy, signature, and tracking links from your actual campaign. Spam filters analyze the entire payload, and your real content might trigger filters that a simple test won't.Teams sending cold outbound at scale need to understand and regularly check deliverability to keep their domains, inboxes, and reply rates healthy. It's a core discipline of managing your sending infrastructure.
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