Free tools

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.

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.

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.

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.

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).

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.

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.