Email infrastructure validation tools
Enterprise-level diagnostics to audit, test, and perfect your email sending setup. Every tool is completely free—no account needed.
Scale your email infrastructure with confidence. Our diagnostic suite validates DNS authentication, tests deliverability factors, and identifies configuration issues before they tank your inbox rate. Built for sales teams, marketers, and anyone sending email at scale. Run unlimited checks, export detailed reports, and fix issues fast.
We’ve got you covered
Are domains included in the package, or do I need to buy them myself?
You have 2 options on ScaledMail. You can purchase domains via ScaledMail and either use right away...or age them for use later. Aged domains have quite a few deliverability benefits! You can also use domains that you already own elsewhere on another registrar like GoDaddy or NameCheap. Our team can set up the DNS records for those domains for you and create your inboxes for sending!
Do I still need to warm up with ScaledMail accounts?
Both yes and no. While many users start sending emails right away, we’ve seen better results when accounts are warmed up for two weeks. We recommend warming up your accounts before sending.
Can I start sending from day one without warming up?
Yes, you can start sending 2 emails per day per ScaledMail account without warming up. However, we strongly recommend warming up your accounts for the best results.
Can I use domains I’ve previously used, or do I need new ones?
Yes, you can use existing domains if they aren’t damaged. That said, we recommend purchasing fresh domains since they generally perform better.
Why do we use 49 users per domain with Microsoft accounts?
This approach balances volume and safety. By sending just 2–5 emails per day per inbox, we rely on more inboxes per domain to increase overall capacity. This setup outperforms the traditional 2–3 inboxes per domain. While some competitors use 99+ inboxes per domain, this burns domains faster. We’ve found 49 inboxes to be the perfect balance.
Does ScaledMail offer Google and Microsoft accounts?
Yes, we do. We provide both Google and Microsoft accounts to ensure a diversified and stable cold email infrastructure.
How many emails can I send per ScaledMail Microsoft and Google account?
. Microsoft: Up to 15 emails/day per microsoft account (including warm-up)
.Google: Up to 25 emails/day per google account.
How does ScaledMail’s deliverability compare to other providers?
ScaledMail offers best-in-class deliverability, thanks to our advanced setup techniques and the reliability of Microsoft infrastructure.
Are the inboxes hosted on shared or private infrastructure?
Each customer is assigned separate and isolated tenants, so the infrastructure is not shared. Additionally, Microsoft rotates the tenant IP every 15 days for added security and reliability.