Integration · Email

Connect Claude & ChatGPT to mailfloss

Ask your AI whether an address is valid, or hand it a list to verify in bulk and read back the results. It can check verification jobs and usage, look after your connected email platforms, and manage webhooks and team members in mailfloss. List hygiene questions get answered without exporting and uploading files.

Connect mailfloss free

Free plan, no credit card. Takes about a minute.

Try asking

“Is [email protected] a valid address?”
The AI verifies the single address and reports the result.
“Verify this list of 200 addresses and show me the results.”
It submits the list as a batch, checks the job status and reads the results page by page.
“Which verification jobs are still running?”
It lists your verification jobs filtered by status.

What your AI can do

Email verification

Verify single addresses, submit batches, check batch status, read results page by page and cancel a batch.

Email platform connections

List integrations, connect, test, update and sync connections, and manage keyword rules on them.

Account and reporting

Read usage analytics, verification jobs, the account timeline and team members, manage webhooks and erase stored verification records.

“How many verifications did we use this month?”
It reads the usage report for the period you ask about.
“Which email platforms are connected to mailfloss?”
It lists all integrations, both connected and disconnected, and can read the details of one connection.
“Re-sync the audiences on our connected email platform.”
It finds the connection and starts a re-sync of its audiences.

33 tools for mailfloss

These tools are switched on when you connect. You can switch any of them off, or require your approval before it runs.

cancel_batch_verifyMoves moneyCancel a batch verify (batch verify id). Financial or irreversible action; may require approval. API summary: Cancel a batch verification job.
create_connection_testChanges dataCreate a new test for a connection. API summary: Test a connection's credentials.
create_erasureChanges dataCreate a new erasure. API summary: Erase stored verification records (data privacy).
create_integration_connectionChanges dataCreate a new connection for a integration. Required: credentials. API summary: Connect a new connection (with credentials).
create_webhookDeletesCreate a new webhook. Required: name, url or events. Destructive action; may require approval. API summary: Create a webhook subscription.
delete_connection_keywordDeletesPermanently delete a keyword by rule id. Destructive action; may require approval. API summary: Delete a keyword rule.
delete_integration_connectionDeletesPermanently delete a connection by connection id. Destructive action; may require approval. API summary: Disconnect a connection.
delete_webhookDeletesPermanently delete a webhook by webhook id. Destructive action; may require approval. API summary: Delete a webhook subscription.
get_accountGet the connected account holder's details.
get_batch_verification_statusCheck the progress of a batch verification by `batch_verify_id`.
get_connectionGet one email-platform connection by `type` and `connection_id`, including its cleaning settings.
get_connection_keywordGet one keyword for a connection by list. Results are paginated. API summary: List a connection's keyword rules.
get_current_userGet the user the API key belongs to.
get_integrationGet one integration by `type`, with all of its connections and their IDs.
get_jobGet one verification job by `project_id`, including its counts and status.
get_usage_reportGet verification usage for a `period` (this_week, this_month, this_year, lifetime), optionally for one `connection_id`.
get_userGet one user by user id. API summary: Get a team member.
get_webhookGet one webhook by webhook id. API summary: Get a webhook subscription.
list_account_activityList recent account activity over the last `days` (1-90).
list_batch_verification_resultsGet the per-email results of a finished batch verification by `batch_verify_id`, paged with `limit` and `cursor`.
list_check_keysList check keys. Optional filters: public key, check plan, get token or check credits. API summary: Verify an API key.
list_companiesList companies. API summary: Read the authenticated organization.
list_integrationsList the email-platform integrations, connected and not connected.
list_jobsList verification jobs, optionally filtered by `status` or `source` (api, csv, integration, and so on).
list_usersList the users in the organization.
list_webhooksList webhooks. Results are paginated. API summary: List webhook subscriptions.
start_batch_verificationVisible to othersSubmit a list of `emails` for verification in the background. Returns a batch ID to check with get_batch_verification_status.
submit_connectionVisible to othersSync a connection (connection id). Has effects visible outside this system. API summary: Re-sync a connection's audiences.
update_accountsVisible to othersUpdate an existing account. Only the fields you pass are changed. Has effects visible outside this system. API summary: Update the authenticated account holder.
update_connection_keywordChanges dataUpdate an existing keyword identified by list. API summary: Add keyword rules.
update_integration_connectionChanges dataUpdate an existing connection identified by connection id. Only the fields you pass are changed. API summary: Update a connection's settings.
update_webhookDeletesUpdate an existing webhook identified by webhook id. Only the fields you pass are changed. Destructive action; may require approval. API summary: Update a webhook subscription.
verify_emailVerify a single email address with `email` and get whether it is deliverable.

Set up in three steps

1
Pick the app
Create a free HeyMyApps account and choose mailfloss from the app list.
2
Paste your key
Paste your mailfloss API key. In the mailfloss dashboard, go to Settings > API and copy your API key (it starts with mf_live_). Keys are scoped to your organization.
3
Add the link to your AI
You get a personal MCP link. Add it to Claude, ChatGPT or Cursor:
1. Click your name, then Settings › Connectors › Add custom connector.
2. Paste your link as the Remote MCP server URL.
3. Switch it on from the + menu in a chat.

Questions

What can the AI do in mailfloss?

It can verify single email addresses, submit batch verifications and read their status and results, and list verification jobs, usage reports, integrations and connections, team members, webhooks and the account timeline. It can connect, test, update, sync and disconnect email platform connections, manage keyword rules and webhooks, and erase stored verification records.

Does the AI see my mailfloss API key?

No. You paste your mailfloss API key into HeyMyApps once. It is encrypted at rest, never shown to the AI and never shown again after you save it. The AI only gets the results of the tools you have switched on.

Can I control what the AI is allowed to do?

Yes. Switch on only the tools you want, for example single verifications and reports. Risky actions, like canceling a batch, disconnecting an email platform or deleting a webhook, can require your approval before they run. Every tool call is logged.

Does it work with ChatGPT?

Yes. In ChatGPT, open Settings › Apps & Connectors › Advanced, turn on Developer mode and add your HeyMyApps link. Developer mode needs a paid ChatGPT plan: Plus, Pro, Business or Enterprise. The same link also works in Claude (Settings › Connectors › Add custom connector), Cursor and other MCP clients.

What does it cost?

HeyMyApps has a free plan, and you do not need a credit card to start. Paid plans are billed per completed task. You also need your own mailfloss account.

Where do I find my mailfloss API key?

In the mailfloss dashboard, go to Settings > API and copy your API key. It starts with mf_live_ and is scoped to your organization, so the AI works with that organization's jobs, connections and reports.