Land in the inbox,
not the spam folder

Email deliverability refers to the ability of your emails to reach the recipient's inbox rather than being filtered to spam or rejected outright. Even if you have a valid email list, poor deliverability means your carefully crafted messages never get seen. It depends on technical factors like SPF, DKIM, DMARC, and your domain's reputation with major inbox providers.

Scores of 90–100 are excellent and indicate your domain is correctly configured and has a good reputation. Scores of 70–89 are good but suggest minor issues worth fixing (often a missing or weak DMARC policy). Scores below 70 indicate significant issues that are likely causing deliverability problems. Any score below 50 requires immediate attention.

DMARC (Domain-based Message Authentication, Reporting & Conformance) is a DNS record that tells receiving mail servers what to do with emails that fail SPF or DKIM checks. Without it, anyone can spoof your domain. Google and Yahoo now require a valid DMARC record for bulk senders, and it's a strong ranking signal for all inbox providers. Yes, you need it.

If your domain or sending IP is blacklisted, Leadsario shows you exactly which blacklists you're on and provides direct links to their removal request forms. Most blacklists have a self-service delisting process that takes 24–72 hours. We also recommend reviewing your recent sending practices to identify what caused the listing and prevent it from happening again.

We recommend running a deliverability test at least once per month, before any major campaign send, after changing your email service provider or DNS records, and any time you notice a drop in open rates or an increase in bounces. Leadsario allows unlimited test runs on all plans, including free.