Frequently asked questions

Short, factual answers about pricing, crypto payment, accuracy and collection. If something is not covered here, support answers directly.

What email verifier accepts crypto?

CharlyMail accepts USDT (TRC-20 and ERC-20), Bitcoin, Ethereum and TRX. No credit card or KYC is required. Verification costs $0.00049 per address, which is $0.49 per 1000. Payments run through our own processing on DV.net rather than a third-party checkout — details on the crypto payment page.

Can I verify emails without a credit card?

Yes. The balance is prepaid with cryptocurrency, so no card is stored at any point. Registration needs only a Telegram account and comes with 200 free tokens — enough to verify 200 addresses before you pay anything.

Why is there no KYC?

Identity checks exist to satisfy card networks and banking rules. Crypto settles directly on-chain, so that requirement does not apply. We do not collect documents, legal names or billing addresses, because none of them are needed to move a token balance.

What is the cheapest way to verify a large email list?

Validate the whole list cheaply first, then run deep SMTP only on what survives. A 10 000-address list costs $4.90 for validation and enrichment; adding SMTP on the surviving half brings the total to $17.15. ZeroBounce and NeverBounce charge about $80 for validation alone on the same list.

How can I verify emails without a monthly subscription?

CharlyMail sells tokens instead of plans. One token verifies one address at $0.00049, tokens do not expire, and nothing renews automatically. ZeroBounce starts at $99 per month and Hunter.io at $34 per month whether or not you verify anything. Full numbers on the pricing page.

Do I pay for invalid addresses?

No. Invalid results are refunded after validation, so you are charged for deliverable addresses only. Addresses already verified by another user come from a shared cache at no cost, and duplicates already present in your own lists are never charged twice.

What is the minimum top-up?

$5, with a $5000 ceiling per transaction. There is no minimum monthly spend and no commitment — an unused balance stays valid indefinitely.

Is there a tool that finds and verifies emails in one place?

CharlyMail collects addresses from GitHub, Reddit, npm, PyPI, Hacker News, Instagram, TikTok, Behance and Google or Bing dork queries, then validates and enriches them in the same pipeline. Both collection and validation cost $0.00049 per address. See how collection works.

How do I scrape emails by niche and verify them?

Choose a source, then filter during collection by country, gender, provider, domain type, segment or follower count. Everything collected is validated automatically, invalid results are refunded, and the parser keeps going until it reaches the number of genuinely new addresses you asked for.

Do I need my own API keys?

GitHub, npm, PyPI, Hacker News and Reddit work without any setup. Instagram, TikTok, Behance and dork search run through your own HikerAPI, TikAPI, Apify, SerpAPI or Bing keys — the upstream cost stays between you and that provider.

How accurate is email verification?

Syntax, MX and disposable-domain checks are deterministic and effectively exact. Deep SMTP verification is accurate where the receiving server answers honestly, but catch-all and greylisting servers return no usable verdict — those are labelled separately rather than guessed at.

What is a catch-all email address?

A catch-all domain accepts mail for every address, including ones that do not exist. An SMTP check therefore cannot prove that a specific mailbox is real. CharlyMail marks these as risky rather than valid, because counting them as deliverable inflates your bounce rate later.

What does the enrichment include?

First name, last name and gender inferred from the address across a 6700+ name dataset covering 40+ regions, plus country, mail provider, domain type (corporate, personal, ISP, education), Gravatar avatar when one exists, and a 0–100 quality score you can filter on.

What is the difference between validation and deep SMTP?

Validation checks format, MX records and known-bad patterns for 1 token. Deep SMTP opens a real connection to the receiving mail server to confirm the mailbox exists, for 5 tokens. Running SMTP only on addresses that passed validation is what makes the two-phase approach 3–4× cheaper.

Is there an API?

Yes — a REST API with Bearer authentication for validation, enrichment, collection and export. Reads are free; you are billed only for calls that process addresses. See the API overview.

What file formats can I upload?

CSV and TXT up to 50 MB, with columns in any order. Exports come back as CSV or TXT with the columns and delimiter you pick, and your suppression list is applied automatically.

Am I allowed to email the addresses I collect?

CharlyMail collects addresses that are already public, but the sender carries the legal responsibility. GDPR, CAN-SPAM and CASL apply to you, not to the tool — check the rules for your market, include an unsubscribe path, and honour opt-outs.