MailboxValidator Disposable Email Checker
Browse all Mailboxvalidator APIsCommunity OpenAPI document · agent-readyData EnrichmentContact EnrichmentapiKey1 EndpointsREST
Know of an official OpenAPI document? Contribute it →
For Agents
Detect disposable, throwaway, or temporary email addresses on a single GET - block trial abuse and signup spam at the form layer.
Use for: Check whether trial@10minutemail.com is a disposable email address, Find all signups in the last week that used a throwaway address, Get the disposable verdict for support@mailinator.com, Block disposable email signups at the registration form
Not supported: Does not detect free-provider domains, verify SMTP existence, or send email - use for disposable-address detection only.
MailboxValidator Disposable Email Checker is a single-purpose endpoint that determines whether an email address belongs to a disposable provider such as 10minutemail.com, mailinator.com, or guerrillamail.com. The API returns a JSON or XML verdict for one email at a time and is typically wired into signup forms and trial-abuse pipelines. The OpenAPI spec exposes one operation: GET /v1/email/disposable.
Install Jentic One Beta
Connect the MailboxValidator Disposable Email Checker to your agent
Jentic One is a self-hosted execution layer for AI agents. It lets your agent call the MailboxValidator Disposable Email Checker, or any other public or private API you need. You set the rules, the agent never sees your credentials, and every call is logged.
Two steps, two machines. Install the instance in a safe environment, then register your agent from wherever it runs.
1
Step 1: Jentic One Host machine
# On the machine that will host your Jentic One instance:
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fmailboxvalidator.com%2Fmailboxvalidator-disposable" | sh2
Step 2: Agent machine
# On the machine where your agent runs (keep this separate from the instance):
curl -fsSL "https://jentic.com/install.sh?src=apis&api=%2Fapis%2Fmailboxvalidator.com%2Fmailboxvalidator-disposable" | sh
jentic register # connects your agent to your Jentic One instanceJentic One is in public beta. The setup above keeps your agent separate from the instance, which is what you want before using real credentials: an agent running as the same OS user as Jentic One can read its stored keys directly. Just evaluating? A single local install is fine to start. See the secure deployment guide for the tiers.
Capabilities
What an agent can do with MailboxValidator Disposable Email Checker API.
Classify an email address as disposable or persistent in one call
Return JSON or XML output controlled by a format query parameter
Detect short-lived inboxes from providers like 10minutemail and mailinator
Operate on a credit-based usage model with an API key query parameter
Use Cases
Patterns agents use MailboxValidator Disposable Email Checker API for, with concrete tasks.
★ Trial Signup Abuse Prevention
Stop free-trial abuse by checking the signup email against the disposable provider list before provisioning a workspace. The Disposable Email Checker returns a single boolean-style verdict per address, which can be wired into a SaaS signup handler with sub-second latency. Blocking disposable addresses typically removes a meaningful percentage of trial signups that never convert.
Call GET /v1/email/disposable?email=trial@10minutemail.com&key={key} and if is_disposable is true, reject the signup with a corporate email prompt.
Newsletter List Hygiene
Clean a newsletter list by removing disposable addresses that drag open rates and click-through rates down. The endpoint can be batched from a worker queue against existing subscribers and the verdict written back to the email service provider as a suppression flag. Running this monthly removes addresses that have already been abandoned by their owners.
For every Mailchimp subscriber created over 90 days ago with zero opens, call /v1/email/disposable and add an is_disposable=true tag for suppression.
Agent-Driven Signup Validation
An AI agent that processes onboarding flows can call the Disposable Email Checker through Jentic before creating a user record. Combined with a free-provider check, the agent makes a high-confidence accept/review/reject decision at signup time without operator involvement.
Before creating a Stripe customer for a new trial signup, call /v1/email/disposable; if is_disposable is true, route the signup to manual review.
Key Endpoints
1 endpoints — mailboxvalidator disposable email checker is a single-purpose endpoint that determines whether an email address belongs to a disposable provider such as 10minutemail.
METHOD
PATH
DESCRIPTION
GET
/v1/email/disposable
Check whether an email is from a disposable provider
GET
/v1/email/disposable
Check whether an email is from a disposable provider
Why Jentic?
What agents get from Jentic-routed access to this vendor.
Setup
Wiring the MailboxValidator Disposable Email Checker by hand means attaching your API key to each request, targeting the api.mailboxvalidator.com host, and interpreting the disposable flag yourself. Through Jentic you install once, import the checker from the API Directory, store the key once, and your agent calls it.
Permission scoping
This API offers a single disposable-address check with the address carried in the request, so limit the agent to the operation it needs, the disposable lookup, and nothing more. You decide which operations are in scope.
Credential isolation
Your MailboxValidator API key is stored once, encrypted, by your own Jentic One instance and injected at execution time. It never enters the agent's prompt, logs, or context.
Intent-based discovery
Agents search Jentic by intent such as 'is this a disposable email address', and Jentic returns the matching MailboxValidator operation with its input schema so the agent calls the right endpoint without browsing the reference docs.
Related APIs
Alternatives and complements available in the Jentic catalogue.
FAQs
Specific to using MailboxValidator Disposable Email Checker API through Jentic.
What authentication does the Disposable Email Checker use?
The endpoint takes an API key passed as the key query parameter alongside the email being checked. The OpenAPI spec does not declare a securityScheme component; documentation lives at https://www.mailboxvalidator.com/api-email-disposable. Through Jentic the key is stored encrypted and injected at execution time.
Can I check disposable status in JSON and XML?
Yes. GET /v1/email/disposable accepts a format query parameter that selects either JSON or XML output. JSON is the default and is recommended for SDK and agent consumers.
What are the rate limits for the Disposable Email Checker?
MailboxValidator uses a credit-based usage model rather than per-second throttling. Each call against /v1/email/disposable consumes credits from your subscription, and the free tier provides a fixed monthly allowance. The spec does not encode an explicit per-second cap.
How do I detect a disposable address through Jentic?
Search Jentic for "detect disposable email" to load the GET /v1/email/disposable operation, then execute with email and key parameters. The response is a JSON object whose is_disposable field is the verdict to act on.
Is the Disposable Email Checker free?
MailboxValidator publishes a free tier with a monthly credit allowance for the disposable endpoint. Paid plans raise the credit cap and unlock parallel access to the free-provider checker and the full validation API.
Can I limit what my agent is allowed to do with the MailboxValidator Disposable Email Checker?
Yes. This API exposes a single operation, GET /v1/email/disposable, and because you run Jentic One yourself, your own rules decide which operations and credentials the agent may use. You can scope the agent to the disposable-address lookup alone, so it can only submit an email and read back the is_disposable verdict. Your stored MailboxValidator key is injected at execution time and is never exposed to the agent, keeping the agent inside the exact boundary you set.
GET STARTED