Valid Email Checker help center
Detailed answers covering every part of the product — verification, pricing, the API, integrations, and account management. Use the search below or browse by category.
Browse by category
Getting started8 articles
Sign up, verify your first email, and find your way around.
Email verification13 articles
How verification works, what each result means, and where the limits are.
Bulk verification4 articles
Uploading lists, file formats, processing speed, and exports.
Pricing & credits4 articles
Plans, bonus credits, expiration rules, and how to choose.
Subscriptions & billing2 articles
Cancel, change plans, payment methods, and invoices.
API3 articles
API keys, rate limits, endpoints, and code examples.
Integrations2 articles
Connecting Mailchimp, HubSpot, Klaviyo, and 14 other platforms.
Account & security2 articles
Passwords, 2FA, sessions, and sign-in protections.
Team management1 article
Adding members, sharing credits, and role permissions.
Privacy & policies2 articles
How we handle your data, refunds, and compliance.
Free tools1 article
DKIM, SPF, DMARC checkers and generators, plus email and signature tools.
Best practices1 article
List hygiene, opt-in, segmentation, and re-engagement.
Getting started
- Dashboard overview: every section explainedA tour of the Valid Email Checker dashboard — the logo, single verifier, credit balance, auto-refill toggle, sidebar navigation, account settings, and analytics. Know where everything is.
- Do I need a credit card to sign up?No. You can sign up, verify emails in the dashboard, and use bulk uploads without entering any payment information. A card is only needed if you want more than 200 credits or want API access.
- How do I sign up for a Valid Email Checker account?Sign up at app.validemailchecker.com/auth/signup with email + password, or use Continue with Google. Confirm your email, log in, and 200 free credits are waiting in your dashboard.
- How fast can I start verifying emails after signing up?About a minute. Sign up, click the confirmation link, log in, and the single-email verifier sits at the top of the dashboard with your 200 free credits already loaded.
- How many free credits do I get when I sign up?Every new account gets 200 free credits after email confirmation. One credit verifies one email, so that is 200 verifications you can run without paying anything. Credits never expire.
- Quick start guide: verify your first email in 5 minutesStep-by-step walkthrough from signup to your first verified email. Create the account, confirm your email, run a single check or a bulk list, and download clean results.
- Welcome to Valid Email CheckerValid Email Checker verifies your email lists before you send. 9-step process, 99.5% accuracy, 17 native integrations, and 200 free credits to start — no credit card.
- What is Valid Email Checker?Valid Email Checker verifies whether an email address is real and safe to send to. Real SMTP checks, 9-step process, 99.5% accuracy, and a 3% bounce rate guarantee on Safe results.
Email verification
- Catch-all emails: the complete guideWhy catch-all domains exist, what they cost you in bounce rate and reputation, and the three ways to handle them. The full B2B-vs-B2C breakdown, with an action plan.
- Downloading your verification results: formats, filters, and the 15-day windowExport your verification results to CSV, XLSX, JSON, or TXT. Filter by status before download, recover unprocessed emails, and watch the 15-day retention deadline.
- Every result type, explained: what each status meansA complete reference for every verification status — Safe, Role, Catch-All, Disposable, Inbox Full, Disabled, Invalid, Spam Trap, Unknown — with scores and what to do with each.
- How accurate is Valid Email Checker?99.5% verification accuracy, with a 3% bounce-rate guarantee on Safe emails — exceed that and we refund the difference in credits. Inconclusive results are auto-refunded.
- How to verify a single email address from your dashboardUse the verification bar at the top of your dashboard to check one email in seconds. Get status, deliverability, risk score, and detailed flags. 1 credit per check.
- How verification works (the 9-step process)What actually happens when you click Verify. A 9-step process running per address — syntax, domain, MX, SMTP, catch-all, disposable, role, spam trap, and additional checks. No emails ever sent to your contacts.
- Our guarantee: 99.5% accuracy + ≤3% bounce rate on SafeTwo promises. 99.5% verification accuracy on every list, and ≤3% bounce rate on emails marked Safe — exceed it and we refund the difference in credits.
- Understanding your verification results: every column explainedRead your results spreadsheet like a pro. What each of the 14 verification columns means, how to filter, and what to do with every email status — Safe, Role, Catch-All, and the rest.
- What does "Unknown" status mean and why do I see it?Unknown means the mail server didn't give a definitive answer to our SMTP check. We auto-refund the credit, so you only pay for results we can stand behind.
- What is a catch-all email domain?A catch-all domain accepts mail for any address at that domain — even ones that do not exist. We flag catch-all separately so you can decide how to handle them.
- What is a disposable email address?A disposable email is a temporary inbox from services like Mailinator or Guerrilla Mail. They exist to receive one signup and then get abandoned. Sending to them is wasted budget.
- What is a spam trap and why are they dangerous?A spam trap is an email address used by anti-spam organizations to identify senders with poor list hygiene. Hitting one signals you are sending to addresses you should not have, which damages your sender reputation.
- What is email verification and why does it matter?Email verification checks whether an email address is real and safe to send to. It catches typos, dead inboxes, disposable accounts, and spam traps before they damage your sender reputation.
Bulk verification
- Bulk email verification: the complete walkthroughUpload CSV or TXT files up to 100 MB or 1 million emails, paste a list, or connect a platform. Track progress, get auto-refunds on unreachable servers, and download clean results.
- How do I verify a list of emails in bulk?Upload a CSV or TXT file in the dashboard's Bulk Upload tab, or paste addresses directly. We process the list in the background and email you when results are ready to download.
- How fast is bulk email verification?A 10,000-address list typically completes in 5-10 minutes. 100,000 in 15-30 minutes. A million-address list in 1-2 hours. We email you when each finishes.
- What file formats can I upload for bulk verification?Valid Email Checker accepts CSV and TXT files for bulk verification. CSV preserves your other columns alongside the verification results. Max 1 million emails or 100MB per file.
Pricing & credits
- Do my credits expire?Pay-As-You-Go credits never expire. Monthly subscription credits reset at the end of each billing cycle. If you cancel a subscription, remaining monthly credits stay usable until the cycle ends.
- How much does Valid Email Checker cost?Starting at $5 for 2,100 credits on Pay-As-You-Go (about $0.0024 per address). Monthly plans are 15-20% cheaper per credit. Every new account gets 200 free credits.
- What are bonus credits and how do they work?Every credit purchase comes with bonus credits at no extra cost. Bonuses scale from 3% on the smallest tier up to 5% on larger tiers. They are added automatically — no codes required.
- What's the difference between Pay-As-You-Go and Monthly?PAYG is a one-time purchase, credits never expire. Monthly is a recurring subscription 15-20% cheaper per credit. Most teams use both — monthly for steady volume, PAYG for spikes.
Subscriptions & billing
- How do I cancel my monthly subscription?Cancel anytime from Account → Billing in the dashboard. You keep your credits until the current billing cycle ends, and PAYG credits stay forever.
- What payment methods does Valid Email Checker accept?We accept all major credit and debit cards (Visa, Mastercard, Amex, Discover) plus 100+ cryptocurrencies. Monthly subscriptions require a card; PAYG accepts both.
API
- How do I get a Valid Email Checker API key?API access unlocks after your first credit purchase (minimum $5). Then generate keys from Account → API Access in the dashboard. Each key is shown once at creation.
- How do I verify a single email with the API?POST to the verify endpoint with your API key and a JSON body containing the email. You get back a JSON response with the canonical status, confidence score, and per-flag breakdown.
- What is the Valid Email Checker API rate limit?60 requests per minute and 10,000 per day per API key by default. Rate limits return HTTP 429 with a Retry-After header. Higher limits are available on Enterprise.
Integrations
- How does the HubSpot integration work?Connect HubSpot via OAuth, choose a contact list, then pick Verify Only or Clean list automatically. The clean-list mode has configurable actions (Keep/Unsubscribe/Delete) per email type.
- Which platforms does Valid Email Checker integrate with?17 native integrations covering the major ESPs and CRMs: Mailchimp, HubSpot, Klaviyo, SendGrid, ActiveCampaign, Brevo, and 11 others. No-code setup from the dashboard.
Account & security
- How do I enable two-factor authentication (2FA) on my account?Turn on 2FA from Account → Security. You can use any TOTP app (Google Authenticator, Authy, 1Password, Bitwarden) or have the codes emailed to you.
- How do I reset my password?Click "Forgot password" on the login page. We send a reset link to your account email. The link works for one hour and can only be used once.
Team management
Privacy & policies
- Do you store the emails I verify?Verification results are stored in your account so you can review history and export them. The lists themselves are automatically deleted after 15 days. We never send mail to your contacts, and we never sell or share your data.
- How we protect your dataHow Valid Email Checker handles your email lists — TLS in transit, encryption at rest, 15-day automatic deletion, no emails ever sent to your contacts, 2FA, session management. The full security and privacy picture.
Free tools
Best practices
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