Email verification buyer guides
Choosing a verifier comes down to how you buy it: one list or every month, a CSV or an API, a credit pack or a flat plan. Each guide answers one of those questions with the published prices of the vendors we track, including the ones that cost less than we do.
- Bulk email verifierBulk email verification for CSV lists up to 100,000 rows: SMTP mailbox checks, catch-all and disposable detection. First 100 free, then from $9/mo, or $39/mo with 100,000 a month at full speed. Vendor prices compared.
- Email list cleaning serviceAn email list cleaning service that removes invalid, disposable and unconfirmable addresses before you send. Plans from $9/mo, or $39/mo with 100,000 a month at full speed, with honest vendor pricing alongside.
- Flat-rate email verificationEmail verification that is never cut off for $39/mo: 100,000 a month at full speed, then slower. First 100 checks free. What fair use means here, and what metered vendors charge.
- Email verification subscriptionA monthly email verification subscription at $39 with no allowance to size, compared with credit-tier subscriptions at 10k, 50k and 100k emails a month.
- Pay-as-you-go email verificationHow pay-as-you-go email verification compares with a small monthly plan: SimpleVerifier Starter is $9 for 2,500 emails a month, cancel anytime, next to other vendors' credit packs.
- Email verification APIA real-time email verification and validation API: Pro at $39/mo includes 10,000 calls a month included, then $1.50 per 1,000. Price at 10k, 100k and 1M calls a month next to other APIs, with curl, Node.js and Python samples.
- Catch-all email verificationCatch-all (accept-all) email verification: why no verifier can confirm these mailboxes over SMTP, how SimpleVerifier grades each one higher, medium or lower likelihood with reasons, what other vendors charge for catch-all results, and plans from $9/mo.
- Email and phone verificationVerify email addresses and phone numbers in one account: Pro email verification plus 5,000 live carrier lookups a month, $49.99/mo with the $20 phone add-on.
- Verify an email list freeVerify an email list free: sign in with Google and the first 100 addresses get a full SMTP mailbox check, downloadable, no card. What other verifiers give free, and what a full list costs after.
- Free email verifier, no signupCheck an email address free with no signup and no card: a live mailbox check, five a minute. Clean a CSV of up to 5,000 rows in your browser without an account. What needs a sign-in, and why.
- Cheapest email verificationThe cheapest email verifier depends on list size and how often you re-check. Published prices for 2,500 to 100,000 emails, including vendors cheaper than us. Plans from $9/mo, first 100 checks free.
- Verify a list before cold emailVerify a cold email list before it goes into Instantly, Smartlead or lemlist: what to remove, what to hold back, and what it costs. First 100 checks free, no card.
- Email verification in AI assistants (MCP)Verify email addresses from ChatGPT, claude.ai, Claude Code, Claude Desktop, Cursor, VS Code or Windsurf through SimpleVerifier's remote MCP server: 6 tools, up to 100 addresses a call. How to add it in ChatGPT and claude.ai, and what it costs.
- Verify an email list cheaplyCut the list for free first, then buy the right way for how often you check it. Our prices from $9/mo, one-time packs where sold, first 100 checks free, and other vendors' published prices with the dates read.
- Check if an email address existsCheck whether an email address exists without sending a message: a free SMTP mailbox check, no account, with valid, risky or invalid and the reason. What it can't confirm, and prices for whole lists from $9/mo.
- Email verifier for Instantly and SmartleadVerify Instantly and Smartlead leads without exporting a CSV: connect an API key, pick a campaign or list, and each lead is tagged valid, risky or invalid. Removal is opt-in. First 100 checks free; Pro $39/mo.
- Best email validation API for developersHow to choose an email validation API: live mailbox check, catch-all handling, rate limits, overage and price at 10k, 100k and 1M calls, with each vendor's price and the date it was read. SimpleVerifier from $39/mo.
- Verify 10,000 emailsWhat verifying 10,000 email addresses costs on each vendor's published pricing, and our price: $15 (a one-time pack of 10,000 email checks that never expires). First 100 checks free.
- Verify 50,000 emailsWhat verifying 50,000 email addresses costs on each vendor's published pricing, and our price: $39 (one month of Pro). First 100 checks free.
- Verify 100,000 emailsWhat verifying 100,000 email addresses costs on each vendor's published pricing, and our price: $39 (one month of Pro). First 100 checks free.
Comparing named vendors instead? See the vendor comparisons, or the use-case guides for a specific kind of list.