Who it is for
Email marketers and anyone assembling an outbound list who wants addresses checked before they are mailed.
ZeroBounce
Email address validation before campaign sends
Overview
What ZeroBounce does
ZeroBounce checks email addresses from inside a ChatGPT conversation. An address can be tested before a campaign is sent, which the vendor ties to fewer bounces, a protected sender reputation, and better inbox placement.
The described function is verification itself rather than list management or sending. Results come back in the same thread where the message or campaign is being planned, so the check happens at the point an address is about to be used rather than as a separate pass through another tool.
ZeroBounce supplies the underlying validation service, and the app is the conversational front end to it.
What stands out
It does one narrow job, which makes it easy to drop into a drafting conversation without changing how the campaign itself is built.
Availability
Where ZeroBounce is listed
ZeroBounce ships this on both marketplaces: ZeroBounce is listed in the Claude connectors directory and in the ChatGPT apps directory, under the same publisher domain.
Only 392 of the 3,150 products in this directory are listed in both marketplaces. One MCP server can serve both surfaces; what differs is each platform's listing and review process.
ChatGPT listing
In the ChatGPT apps directory
- Developer
- ZeroBounce
- Filed under
- Business & Operations
- Listed since
- June 2026
- Authentication
- Authenticates when installed
- Website
- zerobounce.net
- Policies published
- Privacy policy · Terms of service
- Official listing
- Open in ChatGPT
- Snapshot
- August 2026
Claude listing
In the Claude connectors directory
ZeroBounce publishes 2 tools to Claude, a deliberately narrow surface; only 5.3% of the 1,253 Claude-listed connectors expose fewer.
The median Claude-listed connector filed under Productivity publishes 12, so this one sits 10 tools below its bucket's median, 408th of 462.
It falls in the 1-3 tools band, which holds 16.4% of the Claude directory.
ZeroBounce publishes a remote MCP endpoint. Claude connects to it over HTTP; there is nothing to install locally.
Every connector in the Claude directory is remote, all 1,253 of them, so transport is not a differentiator there.
- Publisher
- ZeroBounce
- Verification
- Community-listed (61.5% of the Claude directory)
- Filed under
- Productivity
- Endpoint
-
https://mcp.zerobounce.net/oauth/mcp - Documentation
- Publisher setup docs
- Published tools
- 2 · 1-3 tools band
- Depth rank in Productivity
- 408 of 462
- Snapshot
- August 2026
ZeroBounce is community-listed in the Claude directory, the tier 770 of 1,253 connectors sit in (61.5%). It is the default for a self-published server, and says nothing either way about quality.
In the publisher's words
How ZeroBounce describes it
Validate email addresses instantly with ZeroBounce. This connector lets you verify single emails or batches directly in Claude, detecting invalid, disposable, and risky addresses to help you reduce bounce rates, protect your sender reputation, and improve deliverability.
Quoted from the connector's own Claude directory listing as captured in August 2026. Node8 did not write it and does not vouch for it.
Nearby
Other Productivity connectors
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Malwarebytes
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Claude · ChatGPT
Resy
Restaurant discovery and reservations across the United States
Claude
Shippo
Multi-carrier shipping rates, labels, and tracking
Claude · ChatGPT
WPWriter
WordPress site edits made through conversation
ChatGPT
This is an independent catalogue entry compiled by Node8 from ZeroBounce's public marketplace listings as they stood in August 2026. Listing facts come from the marketplaces; the comparisons against the rest of the directory and any live-endpoint measurements are Node8's. Node8 is not affiliated with ZeroBounce, and inclusion here is not an endorsement.
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