ListCheckup
Free plan · From ≈ $5.59 onceActively maintained
- Is it safe? What ListCheckup says it does with your chats and data, from its own policy pages.See ↓
- Is it free? Free plan · From ≈ $5.59 once · pricing page, read Oct 27, 2026See ↓
- What else does this?
Kawaafree
MailTesterfree
Verifox AIfreeSee ↓
≈ 1visits/mo
Too new to rank yet · estimate, read Oct 27, 2026
- For
- Marketers and teams sending email campaigns who want to clean their own subscriber lists first
- Price
- Free plan · From ≈ $5.59 once€5 · pricing page, read Oct 27, 2026
- Activity
- Actively maintainedsite updated 6 days ago
- How it runs
- API
- Used for
- clean a self-built email list before sending
- check a single address on demand
- watch list domains for stopped mail acceptance
- Has an MCP server (1 in the registry)public registry →
- Data processing agreementpublishedDPA ↗
- Privacy policy updated2026-08-22privacy policy ↗
These are ListCheckup's own statements, read from its pages. We did not audit them. A line that is missing was not found on the pages we read; it does not mean the practice is absent.
- MCP servercom.listcheckup/mcpverified in the MCP registry
- Stateanswers, requires sign-inchecked 2026-10-27
- Address to connectlistcheckup.com/mcp
- API docslistcheckup.com/apithe vendor's page ↗
This card as JSON, for your agent →
Each line is something a program found when it went looking: the registry entry, the server's own answer, a spec that parses. A missing line means we did not find it, not that it does not exist.
Figure and bar: visits/mo, estimate · year: online since
- #1
KawaaMCP · sign-in
Checks email addresses for syntax, domain, mailbox and risk signals so invalid or disposable addresses are removed before sending.
498 installs/moActiveFrom $19/mo - #2
MailTesterMCP · open
Checks email addresses for syntax, mailbox response and disposable domains, and sends test campaigns to seed inboxes to show inbox or spam placement.
3.8kActiveFrom $39/mo2000 - #3
Verifox AIMCP · open
Checks email addresses for syntax, domain records, live mail-server handshake, disposable and catch-all status, returning a valid, risky or invalid verdict.
1.1kActiveFrom $9 once - #4
Email List ValidationMCP · open
Verifies email lists for deliverability, flagging invalid, risky and role-based addresses, spam traps and complainers, then exports cleaned segments.
156From $14/mo - #5
PricklyMailsMCP · sign-in
Checks each email address against its receiving mail server and returns send, review or remove verdicts before you send.
Little sign of useActiveFrom ≈ $8.94/mo
Not it? Say what you need
betaThree tools from the Atlas for the job you describe, each with what fits and what does not.
No notes yet. What do you use ListCheckup for?
Sign in to leave a noteWhat is ListCheckup?
Checks each address on a mailing list against its mail server and reports whether it is valid, invalid, risky, catch-all or unknown. It is listed in the Atlas under Developer tools.
Who is ListCheckup for?
Marketers and teams sending email campaigns who want to clean their own subscriber lists first
How much does ListCheckup cost?
ListCheckup has a free plan; paid plans start at ≈ $5.59 once (€5 once), per its pricing page on 2026-10-27.
Is ListCheckup free?
Yes, ListCheckup has a free plan, per its pricing page on 2026-10-27.
Is ListCheckup still maintained?
Actively maintained: site updated 6 days ago.
What are alternatives to ListCheckup?
In Developer tools, by use: Kawaa, MailTester, Verifox AI, Email List Validation, PricklyMails.
How we read a tool
No votes, no reviews, no vendor claims. Every week a crawler reads each tool's own site and a few public registries, and the words on the card are bands over what it read.
- Use: visits to the site (estimated), installs from npm and PyPI, presence in Chrome's usage report.
- Activity: the newest release on GitHub, npm or PyPI; the newest dated page on the site; open roles on a public jobs board.
- Price: the vendor's own pricing page, read with the date. A figure is printed only when it is on that page.
- The line and the use cases are written by us from the homepage, one tool at a time, and refused when they repeat the vendor's marketing.
How AI assistants read each site — the reading vendors ask us about — is on each tool's own visibility page.
How we read every tool → · By INITE Atlas Desk
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