Agent
Discoverability
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Claude Connector

InboxTrue

Check whether email addresses can receive mail before you send to them.

View in the Claude registry
Category
Marketing
Integration details

Description

InboxTrue checks whether an email address can actually receive mail. It inspects the address's domain and performs proprietary checks, then reports a clear verdict: valid, maybe valid, invalid, ambiguous, or a temporary or permanent error, with a retry hint when a server asks to be retried later. Ask Claude to validate a lead before outreach, clean up a list of contacts you pasted into the conversation, or confirm a signup address is real. Claude can also tell you how many InboxTrue credits remain on your account. InboxTrue only receives the addresses you ask it to check. It never sends email to them and never reads your inbox. Sign in with your InboxTrue account; you can disconnect Claude at any time from Connected apps on the InboxTrue API keys page.

Integration type
Connector
Verification status
Community connector
Platform
Claude
Category
Marketing

The broad Category that contains the Primary Subcategory.

Primary Subcategory
Email Deliverability & Validation

The Primary Subcategory used for this profile’s headline score.

Secondary Subcategories
None listed

Other Subcategories where the Integration is listed.

Brand
InboxTrue
Access
Account required
First tracked
2026-10-08
Tool count
5
Market
US
Agent DiscoverabilityClaude Discoverability Score

Claude Connector discovery is coming soon

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What discovery looks like

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Primary Subcategory

Competing in Claude Email Deliverability & Validation

View Category
0 scoredVerified connectors by score · Community connectors A–Z
Primary Subcategory
—AllegrowPending VerificationGet notified
—BillionVerifyPending VerificationGet notified
—Bouncer Email Verification MCP ServerPending VerificationGet notified
—Easy Email VerificationPending VerificationGet notified
—Email Spam TesterPending VerificationGet notified
—Giggal.aiPending VerificationGet notified
—Inbox Monster MCPPending VerificationGet notified
—InboxTruePending VerificationGet notified
—MailerSendPending VerificationGet notified
—mailflossPending VerificationGet notified
—mailXPending VerificationGet notified
—MyEmailVerifierPending VerificationGet notified
—PingValidPending VerificationGet notified
—Postbox Services: Email Deliverability & Security ToolsPending VerificationGet notified
—QualisendPending VerificationGet notified
—ReachStream Email VerifierPending VerificationGet notified
—ReckonPending VerificationGet notified
—SMTPing Email VerifierPending VerificationGet notified
—ZeroBounce OfficialPending VerificationGet notified
Tools

5 tools agents can invoke

Recommended guideHow to get your Claude Connector organically discoveredFollow the practical steps agents use to find, shortlist, and choose your Connector.Read guide
FAQs

InboxTrue Claude Connector FAQ

How the directory, categories and Discoverability Score work.

Read the methodology
How do I improve InboxTrue's Claude Connector discoverability?

The levers are the listing surface agents actually read: names, descriptions, keywords, tool metadata, and registry health. Which lever matters depends on where discovery breaks, which is what continuous measurement shows.

What are InboxTrue alternatives on Claude?

As of 2026-10-28, InboxTrue competes with Allegrow, BillionVerify, Bouncer Email Verification MCP Server, Easy Email Verification, Email Spam Tester, Giggal.ai, Inbox Monster MCP, MailerSend and 10 more in Claude Email Deliverability & Validation, ranked by public Discoverability Score.

Where is this profile measured?

This profile uses the geography attached to the latest public registry snapshot: US. Locale tags are intentionally omitted.