--- title: "Email Deliverability & Authentication Tools | FirstSales" description: "Free email deliverability & authentication tools for sales teams and email marketers. Tools to validate SPF, DKIM, DMARC records and ensure email authentication" canonical: "https://firstsales.io/tools/category/email-deliverability/" --- 100% Free • No Signup # ✉️ Email Deliverability & Authentication Tools Tools to validate SPF, DKIM, DMARC records and ensure email authentication. All tools work instantly without signup. 26 Tools [Home](/)/[Tools](/tools/)/Email Deliverability & Authentication [checkerSPF Record CheckerValidate your domain's SPF record and identify misconfigurations that block email delivery](/tools/spf-record-checker/)[checkerDKIM Record CheckerVerify your DKIM DNS record is correctly published and properly signing outgoing emails](/tools/dkim-record-checker/)[checkerDMARC Record CheckerAnalyze your DMARC policy to ensure email authentication alignment and reporting is active](/tools/dmarc-record-checker/)[analyzerEmail Authentication AnalyzerRun a full SPF + DKIM + DMARC audit on any domain and get a pass/fail scorecard](/tools/email-authentication-analyzer/)[checkerEmail Blacklist CheckerCheck if your IP or domain appears on 100+ email blacklists and spam databases](/tools/email-blacklist-checker/)[checkerIP Reputation CheckerLook up the sender reputation score for any IP address across major email providers](/tools/ip-reputation-checker/)[lookupSender Score LookupCheck your email sending IP's sender score (0-100) and compare against industry benchmarks](/tools/sender-score-lookup/)[testerInbox Placement TesterTest whether your emails land in inbox, spam, or promotions tab across Gmail, Outlook, and Yahoo](/tools/inbox-placement-tester/)[calculatorEmail Warm-Up CalculatorCalculate the optimal warm-up schedule for new email accounts based on daily send volume targets](/tools/email-warmup-calculator/)[checkerDeliverability Score CheckerGet a composite deliverability score for your domain combining authentication, reputation, and blacklist status](/tools/deliverability-score-checker/)[calculatorEmail Bounce Rate CalculatorCalculate your hard and soft bounce rates and benchmark against industry averages by niche](/tools/email-bounce-rate-calculator/)[checkerSpam Score CheckerPaste your email content and get a spam probability score with flagged trigger words](/tools/spam-score-checker/)[analyzerEmail Header AnalyzerParse raw email headers to trace delivery path, authentication results, and latency](/tools/email-header-analyzer/)[lookupMX Record LookupLook up MX records for any domain to verify mail server configuration and priority settings](/tools/mx-record-lookup/)[lookupReverse DNS LookupPerform a reverse DNS (PTR) lookup on any IP to verify it resolves to your sending domain](/tools/reverse-dns-lookup/)[checkerPTR Record CheckerVerify your mail server's PTR record matches your sending domain for proper reverse DNS](/tools/ptr-record-checker/)[testerSMTP Server TesterTest SMTP connectivity by sending a test message and verifying handshake, TLS, and authentication](/tools/smtp-server-tester/)[checkerEmail Port CheckerCheck if email ports 25, 465, and 587 are open and accepting connections on your mail server](/tools/email-port-checker/)[checkerTLS Encryption CheckerVerify your mail server supports TLS encryption and check which TLS versions are enabled](/tools/tls-encryption-checker/)[analyzerEmail Routing AnalyzerTrace the delivery route of an email from sender to recipient and identify routing bottlenecks](/tools/email-routing-analyzer/)[checkerBIMI Record CheckerValidate your BIMI DNS record and verify your brand logo will display in recipient inboxes](/tools/bimi-record-checker/)[checkerARC Record CheckerCheck Authenticated Received Chain (ARC) headers to verify forwarded email authentication](/tools/arc-record-checker/)[testerEmail Forwarding TesterTest if email forwarding preserves SPF/DKIM/DMARC authentication through intermediary servers](/tools/email-forwarding-tester/)[testerMail Server TesterRun a comprehensive health check on any mail server including connectivity, DNS, and auth](/tools/mail-server-tester/)[checkerDNS Propagation CheckerCheck if your DNS changes (SPF, DKIM, MX) have propagated across global nameservers](/tools/dns-propagation-checker/)[testerMail TesterTest email deliverability by sending to a temporary inbox and analyzing spam score, headers, and rendering](/tools/mail-tester/) ## Automate Your Email Deliverability & Authentication These free tools are great for quick checks. FirstSales automates your entire email deliverability & authentication workflow with AI-powered personalization. [Start your $1 trial](https://app.firstsales.io) Setup in 8 minutes • Cancel anytime Explore More ## Related Tool Categories Browse more free sales and email marketing tools. [✅Email Validation & Verification](/tools/category/email-validation/)[📧Cold Email Tools](/tools/category/cold-email/)[🧮Sales Calculators](/tools/category/sales-calculators/)[🌐Domain & DNS Tools](/tools/category/domain-dns/)[📊Email Marketing Calculators](/tools/category/email-marketing/)[✍️Content & Copy Tools](/tools/category/content-copy/) [View All Tools ](/tools/) ## FAQs Your questions answered Can't find what you're looking for? Contact our [customer support team](mailto:support@firstsales.io) ### General ### ### ### Deliverability ### ### Can't find what you're looking for? Contact our [customer support team](mailto:support@firstsales.io)