Email Verification & Deliverability
Free email verification and deliverability tools
14 of the 40 email verification and deliverability tools in this directory are free or have a free plan.
All of them pair the free plan with paid ones; the table says what each free plan includes.
Listings checked up to Nov 12, 2026 · Where the facts come from
| Tool | Price | What is free |
|---|---|---|
| ZeroBounceEmail list verification with warm-up and DMARC monitoring in one plan | Free plan · from $39 one-time | Freemium: 100 verification credits a month for sign-ups with a business email domain, plus 1 inbox test, 1 server test, 1 blacklist monitor and 10 Email Finder searches. No warm-up or DMARC. |
| GlockAppsInbox placement testing with DMARC analytics and uptime monitoring | Free plan · from $59/mo | 10,000 DMARC messages a month for unlimited domains, 5 uptime monitors, 1 IP reputation monitor and 2 free spam tests, no card required. |
| dmarcianDMARC report processing and policy deployment, by a spec co-author | Free plan · from $19.99/mo | Personal plan for non-business domains only: up to 2 active domains sending fewer than 1,250 emails a month, 1 user and a month of data history. |
| VerifaliaEmail list cleaning and real-time email verification | Free plan · from $9/mo | 25 free verification credits every day, which expire at the end of the day. |
| Reoon Email VerifierBulk and real-time email verification with refunds on unknowns | Free plan · from $9/mo | Every account gets 20 daily credits (up to 600 verifications a month) plus 100 instant credits at sign-up, with no card required. |
| mailboxlayerEmail validation API that returns a JSON quality score | Free plan · from $14.99/mo | 100 API requests, for non-commercial use only. |
| QuickEmailVerificationBulk email list cleaning and a real-time verification API | Free plan · from $4 one-time | 100 verification credits per day. |
| Abstract Email ValidationEmail validation API: format, MX and SMTP checks in one call | Free plan · from $17/mo | 100 requests a month at 3 requests per second, with the full response and no credit card. |
| TrulyInboxEmail warmup priced by warmup emails sent, not by mailbox | Free plan · from $22/mo | Free for 1 account: 10 warmup emails a day with basic deliverability tracking. |
| ValimailDMARC monitoring and enforcement with BIMI logo add-on | Free plan · from $0 | Monitor: visibility across your domains and the services sending on them, with free sign-up. |
| DMARC DigestsDMARC monitoring with weekly email digests, priced per domain | Free plan · from $14/mo | Free monitoring: top 10 mail sources with 5 IPs each, 7 days of report history, weekly email digests only. |
| DMARC ReportDMARC report parsing and monitoring with a free tier | Free plan · from $25/mo | Core plan, free: 1 domain, 10,000 monthly DMARC messages, 30 days of data history and aggregate reports. |
| MxToolboxEmail and DNS lookups plus blacklist and DMARC monitoring | Free plan · from $129/mo | Weekly blacklist monitoring for 1 domain. |
| Mail-TesterSend an email to a test address and get a spam score out of 10 | Free plan · from $10/mo | Free web interface: 3 tests per 24 hours, results kept for 7 days. |
Common questions
Which email verification and deliverability tools are free?
14 of the 40 email verification and deliverability tools in this directory are free or have a free plan. They are ZeroBounce, GlockApps, dmarcian, Verifalia, Reoon Email Verifier, mailboxlayer, QuickEmailVerification, Abstract Email Validation, TrulyInbox, Valimail, DMARC Digests, DMARC Report, MxToolbox and Mail-Tester.
When was this checked?
Each listing shows its own date. On this page they run from Oct 18, 2026 to Nov 12, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.
This page is built from the listings. A tool is here because its listing says so, and each listing names the pages it was read from.