Ten free tools. No account, no card.

Authentication is the entry ticket and warming builds on top of it. Check the records a provider reads, generate the ones you are missing, and score a template before it goes out.

CheckFind out what a provider sees before you send.

Email Authentication Checker

Audits SPF, DKIM, DMARC, MX and BIMI for any domain in one lookup, and flags lookup overflow, weak DKIM keys and a missing DMARC policy.

SPF · DKIM · DMARC · MX · BIMI

Blacklist Checker

Queries the 21 most common email blacklists for a domain or IP. A listing links straight to its delisting guide.

21 lists

Free Email Deliverability Test

Your email scored for spam signals, then sent and reported provider by provider: inbox, promotions or spam. Signup, no card, results by email.

Inbox · Promotions · Spam

Domain Reputation Checker

One report on everything public about a domain's standing: blacklists, SPF, DKIM, DMARC, MX, reverse DNS and the registration date, with a fix order and links to Postmaster Tools and SNDS.

Blacklists · Auth · PTR · Age

Email Template Analyzer

Scores the subject line and the body separately, names the evidence and the fix for every finding, and previews the email as an iPhone notification, in Gmail and in Outlook.

Two scores · Email preview
01
Check the records.

SPF, DKIM and DMARC decide whether a provider can tell your mail from a spoof. Most new domains have one missing.

02
Fix what the check found.

Publish the exact record the generator gives you. A listing on a blacklist has its own delisting guide.

03
Then warm the domain.

Authentication gets you in the door. Reputation, built by an AI Agent in real threads, is what keeps your mail in the inbox.

Get started

Records fixed? Warm the domain next.

An AI Agent on every mailbox, real threads across the MailStrike network, and a Free Deliverability Test to see where your mail lands today.