Tool roundups
Each roundup compares the tools people actually use for one job, in a table of free limit, bulk limit, price, whether you need an account, and what each is best for. Every table is ranked by one rule stated on the page, and our own tools sit wherever that rule puts them, including below competitors.
Best bulk domain availability checkers (2026)
Ranked by the most domains one search or run accepts without an account, as each vendor publishes it.
6 tools · checked October 19, 2026
Best email provider lookup tools (2026)
Ranked by the most domains one run looks up without creating an account; tools that need an account score 0.
6 tools · checked October 19, 2026
Best domain age checkers (2026)
Ranked by the most domains one run checks without an account.
6 tools · checked October 19, 2026
Best bulk WHOIS lookup tools (2026)
Ranked by the most domains one run looks up without creating an account; tools that need an account score 0.
7 tools · checked October 19, 2026
Email verification tools compared by price
Ranked by the lowest published price to verify 10,000 addresses every month, billed month to month: a monthly plan where one exists, otherwise one 10,000-credit pack a month.
11 tools · checked October 27, 2026
Phone number validation tools compared by price
Ranked by the lowest published monthly price for 5,000 live lookups that return carrier and line type.
5 tools · checked October 19, 2026
Free email deliverability tools compared
Ranked by how many domains one free run checks without creating an account; tools that need an account count as 0.
8 tools · checked October 19, 2026
ZeroBounce alternatives compared by price
Ranked by the lowest published price to verify 10,000 addresses every month, billed month to month, the same rule as our main email verification roundup. ZeroBounce is the reference row.
7 tools · checked October 27, 2026
NeverBounce alternatives compared by price
Ranked by the lowest published price to verify 10,000 addresses every month, billed month to month, the same rule as our main email verification roundup. NeverBounce is the reference row.
7 tools · checked October 27, 2026
MillionVerifier alternatives compared by price
Ranked by the lowest published price to verify 10,000 addresses every month, billed month to month, the same rule as our main email verification roundup. MillionVerifier is the reference row.
7 tools · checked October 27, 2026
Kickbox alternatives compared by price
Ranked by the lowest published price to verify 10,000 addresses every month, billed month to month, the same rule as our main email verification roundup. Kickbox is the reference row.
7 tools · checked October 27, 2026
Hunter alternatives compared by price
Ranked by the lowest published price to verify 10,000 addresses every month, billed month to month, the same rule as our main email verification roundup. Hunter is the reference row.
7 tools · checked October 27, 2026
Clearout alternatives compared by price
Ranked by the lowest published price to verify 10,000 addresses every month, billed month to month, the same rule as our main email verification roundup. Clearout is the reference row.
7 tools · checked October 27, 2026
Emailable alternatives compared by price
Ranked by the lowest published price to verify 10,000 addresses every month, billed month to month, the same rule as our main email verification roundup. Emailable is the reference row.
7 tools · checked October 27, 2026
Best email verifier for Instantly: 7 options compared
Ranked first by connection: tools whose own site lists an integration with Instantly, or that are built into Instantly, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for Smartlead: 7 options compared
Ranked first by connection: tools whose own site lists an integration with Smartlead, or that are built into Smartlead, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for Apollo: 7 options compared
Ranked first by connection: tools whose own site lists an integration with Apollo, or that are built into Apollo, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for HubSpot: 7 options compared
Ranked first by connection: tools whose own site lists an integration with HubSpot, or that are built into HubSpot, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for Mailchimp: 7 options compared
Ranked first by connection: tools whose own site lists an integration with Mailchimp, or that are built into Mailchimp, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for lemlist: 7 options compared
Ranked first by connection: tools whose own site lists an integration with lemlist, or that are built into lemlist, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for Reply.io: 7 options compared
Ranked first by connection: tools whose own site lists an integration with Reply.io, or that are built into Reply.io, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for Saleshandy: 7 options compared
Ranked first by connection: tools whose own site lists an integration with Saleshandy, or that are built into Saleshandy, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for Woodpecker: 7 options compared
Ranked first by connection: tools whose own site lists an integration with Woodpecker, or that are built into Woodpecker, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for Klaviyo: 7 options compared
Ranked first by connection: tools whose own site lists an integration with Klaviyo, or that are built into Klaviyo, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for Brevo: 7 options compared
Ranked first by connection: tools whose own site lists an integration with Brevo, or that are built into Brevo, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for ActiveCampaign: 7 options compared
Ranked first by connection: tools whose own site lists an integration with ActiveCampaign, or that are built into ActiveCampaign, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for Constant Contact: 7 options compared
Ranked first by connection: tools whose own site lists an integration with Constant Contact, or that are built into Constant Contact, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for Salesforce: 7 options compared
Ranked first by connection: tools whose own site lists an integration with Salesforce, or that are built into Salesforce, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for Pipedrive: 7 options compared
Ranked first by connection: tools whose own site lists an integration with Pipedrive, or that are built into Pipedrive, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for Zoho CRM: 7 options compared
Ranked first by connection: tools whose own site lists an integration with Zoho CRM, or that are built into Zoho CRM, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for Clay: 7 options compared
Ranked first by connection: tools whose own site lists an integration with Clay, or that are built into Clay, come before CSV-only and unconfirmed ones (SimpleVerifier's beta connectors count as CSV until they are generally available). Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for GoHighLevel: 7 options compared
Ranked first by connection: a check built into GoHighLevel comes before tools that take a CSV export. Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack); a check with no published price ranks last in its group.
7 tools · checked November 3, 2026
Best email verifier for Close: 7 options compared
Ranked first by connection: a check built into Close comes before tools that take a CSV export. Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack); a check with no published price ranks last in its group.
7 tools · checked October 27, 2026
Best email verifier for Freshsales: 7 options compared
Ranked first by connection: a check built into Freshsales comes before tools that take a CSV export. Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack); a check with no published price ranks last in its group.
7 tools · checked November 3, 2026
Best email verifier for ZoomInfo: 7 options compared
Ranked first by connection: a check built into ZoomInfo comes before tools that take a CSV export. Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack); a check with no published price ranks last in its group.
7 tools · checked November 3, 2026
Best email verifier for Lusha: 7 options compared
Ranked first by connection: a check built into Lusha comes before tools that take a CSV export. Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack); a check with no published price ranks last in its group.
7 tools · checked November 3, 2026
Best email verifier for Snov.io: 7 options compared
Ranked first by connection: a check built into Snov.io comes before tools that take a CSV export. Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack); a check with no published price ranks last in its group.
7 tools · checked November 3, 2026
Best email verifier for RocketReach: 7 options compared
Ranked first by connection: a check built into RocketReach comes before tools that take a CSV export. Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack); a check with no published price ranks last in its group.
7 tools · checked November 3, 2026
Best email verifier for Seamless.AI: 7 options compared
Ranked first by connection: a check built into Seamless.AI comes before tools that take a CSV export. Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack); a check with no published price ranks last in its group.
7 tools · checked November 3, 2026
Best email verifier for Cognism: 7 options compared
Ranked first by connection: a check built into Cognism comes before tools that take a CSV export. Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack); a check with no published price ranks last in its group.
7 tools · checked November 3, 2026
Best email verifier for AWeber: 7 options compared
Ranked first by connection: a check built into AWeber comes before tools that take a CSV export. Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack); a check with no published price ranks last in its group.
7 tools · checked October 27, 2026
Best email verifier for Kajabi: 7 options compared
Ranked first by connection: a check built into Kajabi comes before tools that take a CSV export. Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack); a check with no published price ranks last in its group.
7 tools · checked November 3, 2026
Best email verifier for Shopify: 7 options compared
Ranked first by connection: a check built into Shopify comes before tools that take a CSV export. Inside each group, by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack); a check with no published price ranks last in its group.
7 tools · checked October 27, 2026
Best email verifier for cold email: 7 tools compared
Ranked first by how many of the two most-used cold email senders, Instantly and Smartlead, the tool connects to or is built into (both, then one, then CSV only), then by the lowest published price to verify 10,000 addresses a month (a monthly plan where one exists, otherwise a 10,000-credit pack).
7 tools · checked October 27, 2026
Best email verifier for agencies: 9 tools compared
Ranked by the lowest published price to verify 1,000,000 addresses in a month: a monthly plan that covers it, otherwise a 1,000,000-credit pack. Vendors that quote this volume on request rank last.
9 tools · checked October 30, 2026
Cheapest bulk email verifier: price to verify 100,000 emails
Ranked by the lowest published price to verify 100,000 addresses once: one month of a plan that covers it, or a 100,000-credit pack, whichever is lower.
11 tools · checked October 30, 2026
Unlimited email verification: flat price, no credits, never cut off
Ranked by the lowest published price to verify 1,000,000 addresses in a month (a monthly plan that covers it, otherwise a 1,000,000-credit pack). The extra column shows what happens when you go past the plan.
9 tools · checked October 30, 2026
Looking for a replacement for one vendor? See the alternatives pages or the full email verification price comparison.