Email deliverability

Reach the Inbox, Not the Spam Folder

Email deliverability is whether your messages actually land in the inbox. Mailthentic verifies every address and checks SPF, DKIM, DMARC and domain health before you send, so you cut bounces, avoid spam folders, and protect your sender reputation.

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What quietly sends your email to spam

Most inbox placement problems come down to a few fixable issues.

Invalid and risky addresses

Sending to invalid, catch-all or disposable addresses drives up bounce rates and damages your reputation with Gmail and Outlook.

Missing SPF, DKIM and DMARC

Without correct authentication records, mailbox providers cannot confirm your mail is legitimate, so more of it goes to spam.

A damaged sender reputation

Past bounces and spam complaints lower your sender score, which means even good emails start missing the inbox.

How Mailthentic protects your inbox placement

Verify, authenticate, and clean before every send.

Email verification

A 9-point engine validates syntax, domain, MX and the mailbox itself, flagging catch-all, disposable and role accounts before you send.

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Domain health and SPF, DKIM, DMARC

Check your authentication records and domain health, with clear recommendations to fix anything that hurts inbox placement.

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Bulk email verifier

Clean an entire list in minutes, then download verified results or push them straight back to your CRM.

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Provider verification guides

Understand how Gmail, Outlook, Yahoo and other providers handle verification so you can send with confidence.

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Frequently asked questions

What is email deliverability?

Email deliverability is whether the messages you send actually arrive in the recipient's inbox, rather than bouncing or landing in spam. It depends on list quality, sender reputation, and authentication records like SPF, DKIM and DMARC.

How do I improve email deliverability?

Start by verifying your list to remove invalid, risky and catch-all addresses, then make sure SPF, DKIM and DMARC are set up correctly for your sending domain. Sending to clean, engaged lists from an authenticated domain is the foundation of strong deliverability.

Does email verification improve deliverability?

Yes. Verifying addresses before you send cuts bounce rates, which protects your sender reputation with mailbox providers like Gmail and Outlook. A lower bounce rate and fewer spam traps mean more of your email reaches the inbox.

What are SPF, DKIM and DMARC?

They are DNS records that prove your email is legitimate. SPF lists the servers allowed to send for your domain, DKIM signs your messages, and DMARC tells receivers what to do if a message fails those checks. Mailthentic checks all three on every verification and in the domain health checker.

Why are my emails going to spam?

Common causes are sending to invalid or unengaged addresses, missing or misconfigured SPF, DKIM and DMARC records, and a damaged sender reputation from past bounces. Verifying your list and fixing authentication usually resolves most inbox placement problems.

Put your next campaign in the inbox

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