Free tools
DKIM, SPF, DMARC checkers and generators, plus email and signature tools.
- Are emails from the Email Address Generator real, working addresses?No. The Email Address Generator produces realistic-looking addresses for test data — they look like real people but the mailboxes do not actually exist. Sending real email to them will bounce. Use them for QA, load tests, and dummy data only.
- Can I download my email signature as HTML from the generator?Yes. The Email Signature Generator has a Download button that saves your signature as a single .html file. You can also use the Copy HTML button to put the markup directly on your clipboard.
- Do free-tool checks count against my credit balance?No. None of the marketing-site free tools touch your credit balance — even if you happen to be logged in. The free verifier has its own rate limit (3/day or 1/day on VPN), separate from the dashboard's credit-consuming engine.
- Do I need an account to use the Valid Email Checker free tools?No. Every tool on Valid Email Checker labelled 'free' (SPF/DKIM/DMARC checkers and generators, email verifier, signature generator, address generator) works with no account, no signup, no credit card. Signing up only unlocks bulk, API, and integrations.
- Does the SPF Record Generator support all major ESPs?Yes — any ESP that publishes an SPF include string works with the generator. Use the Include chip and paste their include domain (e.g. _spf.google.com for Google Workspace, servers.mcsv.net for Mailchimp).
- How do I use the DKIM Record Checker tool?Enter your domain, pick (or auto-detect) the DKIM selector, and the DKIM Record Checker returns the live TXT record at selector._domainkey.yourdomain.com with every DKIM tag parsed out.
- How do I use the DKIM Record Generator tool?Enter your domain and selector, pick a key length (2048 or 4096), and the DKIM Record Generator creates an RSA key pair in your browser. You publish the public key as a DNS TXT record and configure the private key in your ESP.
- How do I use the DMARC Record Checker tool?Type your domain and the DMARC Record Checker looks up the TXT record at _dmarc.yourdomain.com, parses every tag (p, sp, rua, ruf, pct, fo), and flags any policy or alignment issues.
- How do I use the DMARC Record Generator tool?Pick your domain, choose a policy (start with 'none' to monitor), add the inbox where aggregate reports should land, and the DMARC Record Generator emits a copy-paste TXT record for _dmarc.yourdomain.com.
- How do I use the Email Address Generator for test addresses?Pick a country pattern, choose your domains, pick your name format (firstlast, f.last, first_last, etc.), set the quantity (up to 50,000), pick an export format (CSV, XLSX, JSON, TXT), and download.
- How do I use the Email Signature Generator?Pick a template (or start from scratch), fill in name/title/company/contact details, optionally upload a photo and social links, then copy the HTML or download it. Paste into Gmail, Outlook, or Apple Mail signature settings.
- How do I use the free email verifier (no login required)?Go to /tools/email-verifier, type any email into the box, solve the invisible captcha, and you get a verification result in about two seconds. No signup, no card, no account.
- How do I use the SPF Record Checker tool on Valid Email Checker?Type your domain into the SPF Record Checker, click Check, and you get the live TXT record back in a second along with a breakdown of every mechanism and the failure policy.
- How do I use the SPF Record Generator tool?Add your domain, pick the senders you authorize (Google Workspace, Microsoft 365, Mailchimp, etc.), choose a failure policy, and the SPF Record Generator builds a copy-paste TXT record ready for your DNS provider.
- How many free verifications can I do per day without logging in?Three per day from a normal residential IP. One per day if you are connecting through a VPN, Tor exit, or known datacenter range. The window is a rolling 24 hours, tracked by IP plus browser fingerprint.
- What does the SPF Record Checker actually look up?It queries Google's public DNS-over-HTTPS resolver for the TXT records on your apex domain, finds the one starting with v=spf1, and parses every mechanism. No data is stored, nothing is sent to our servers.
- What free email tools does Valid Email Checker offer?A free single-email verifier plus tools for DKIM, SPF, DMARC records, email signatures, and realistic test address generation. No signup required for any of them.
- What is the difference between the free email verifier and the logged-in dashboard verifier?Same 11-step verification engine. The free verifier is rate-limited (3/day or 1/day on VPN) and returns just the canonical status. The dashboard verifier consumes credits, returns the full risk report, and unlocks bulk, API, and integrations.
- What key length does the Valid Email Checker DKIM Generator use?Default is 2048-bit RSA, with 4096-bit available as an option. 2048-bit is the modern recommendation — strong, broadly compatible, and fits within DNS TXT record size limits. 1024-bit is not offered; it is considered too weak in 2026.
- Which DKIM selector should I enter in the DKIM Checker?Whichever selector your ESP told you to publish — Google uses 'google', Microsoft 365 uses 'selector1' and 'selector2', Mailchimp uses 'k1'. If you do not know, enable Auto-detect and the checker tries the eight most common automatically.
- Why am I limited to 1 verification per day from a VPN or datacenter IP?VPN exits, Tor nodes, and datacenter IPs are heavily used by scrapers and abuse pipelines. The free verifier drops the quota from 3 to 1 on those IPs to keep the tool free for everyone else without giving away unlimited automated runs.
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