Agent
Discoverability

InboxTrue

Check if email addresses exist

View in the ChatGPT registry
Integration details

Description

InboxTrue checks whether an email address can actually receive mail before you send to it. It inspects the address's domain and talks to its mail server, then reports a clear verdict: valid, maybe valid, invalid, ambiguous, or a temporary or permanent error, with a retry hint when a server asks us to try again later. Use it to clean up a contact list you pasted into the chat, double-check a lead before outreach, or confirm a signup address looks real. You can also ask how many InboxTrue credits remain on your account. InboxTrue only sees the addresses you ask it to check; it never sends email to them and never reads your inbox.

Integration type
Plugin
Verification status
Not applicable
Platform
ChatGPT
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.

Access
Account required
First tracked
2026-10-30
Tool count
5
Market
US
Agent DiscoverabilityChatGPT Plugin Discovery Score
ChatGPT organic discovery is live

Your score is coming

ChatGPT now suggests Plugins on its own when they match a user's request.Your Plugin Discovery Score measures how often yours appears, and it will show here as soon as it’s ready.

What discovery looks like

ChatGPT recommends Airtable when a user asks it to update a CRM.
ChatGPT surfaces Airtable because it matches the user's request.

Get alerts for InboxTrue

Get updates when InboxTrue’s Discoverability Score or category rank changes.

Primary Subcategory
Listed in alphabetical order
Primary Subcategory
CleanMyList0/100
ClearBounce0/100
Easy Email Verification0/100
Email Spam Tester0/100
Inbox Monster0/100
InboxTrueComing soonGet notified
Tools

5 tools agents can invoke

Recommended guideHow to get your ChatGPT Plugin suggestedFollow the practical steps agents use to find, shortlist, and choose your Plugin.Read guide
FAQs

InboxTrue ChatGPT Plugin FAQ

How the directory, categories and Discoverability Score work.

Read the methodology
How do I improve InboxTrue's ChatGPT Plugin 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 ChatGPT?

As of 2026-10-30, InboxTrue competes with CleanMyList, ClearBounce, Easy Email Verification, Email Spam Tester, Inbox Monster, Mailinite Outbound Readiness, MailRambo, MailReach and 4 more in ChatGPT 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.