Send the address
At sign-up, newsletter subscription or contact creation, via backend or directly from the form with a publishable key.
Fake Email Detection · Security AI
Real address or throwaway? Checked before the account exists.
Fake email detection checks addresses for disposable domains, syntax, MX records and deliverability.
From €0.01 per request. For sign-up, newsletter and CRM, via REST, browser and MCP.
No credit card No contract, no base fee Integrated in minutes
Trusted by leading companies worldwide
OEM PARTNERSHIP
Hardware giants choose PaperOffice exclusively.
Sole official DMS partner for QNAP: Classic app, AI BYOS.
MoreISO/IEC 27001
CERTIFIED
SOC 2 Type 2
IN PREPARATION
Sole official DMS partner for ASUSTOR: Classic app, AI BYOS.
MoreHow Fake Email Detection works
Check, decide, keep it clean.
One call tells you whether an address uses a disposable domain, is syntactically valid, has a mail server and is deliverable.
Receive the result with signals
Disposable domain, syntax, MX record and deliverability are reported separately, plus the domain.
Apply the rule
Reject or flag disposable addresses, return undeliverable addresses for correction, clean existing data in batch.
Where Fake Email Detection runs
- REST API One call, JSON back in milliseconds.
- In the browser Directly from your web app with a publishable key, without your own server.
- Workflow AI Check and flag new contacts automatically.
- Batch Check many addresses in one call.
- MCP From Claude, ChatGPT or Cursor.
Pricing
Per request. No subscription.
You pay per request – for less in the app than via API and MCP. No base fee.
from €0.01 per request
€1 equals 1,000 credits. Every answered request is billed.
Fake Email Detection
One price per request, batch per address
- Disposable domains, syntax, MX and deliverability
- Batch check for lists and existing data
- Publishable keys for forms in the browser
| Endpoint | Price |
|---|---|
Single address | €0.01 per request |
Batch, per address | €0.01 per address |
Syntax and MX | €0.01 per request |
Capabilities
What fake email detection delivers.
Everything the API delivers is equally available in workflows and via MCP.
- Disposable domains
Temporary mail services are detected, the list is maintained continuously.
- Syntax check
Formally valid address according to common rules.
- MX record
Does the domain have a mail server?
- Deliverability
Signals whether a mail would arrive.
- Batch check
Lists and existing data in one call.
- Statistics
Overview of checked addresses and hit rates.
- Directly in the form
From the browser with a publishable key.
- Phone and website
Check phone numbers and URLs with the validation API too.
curl -X POST \ "https://api.paperoffice.ai/latest/fakeemail/check" \ -H "Authorization: Bearer po_ut_YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{"email":"max@tempmail.example"}'curl -X POST \ "https://api.paperoffice.ai/latest/fakeemail/check_bulk" \ -H "Authorization: Bearer po_ut_YOUR_API_KEY" \ -H "Content-Type: application/json" \ -d '{"emails":["anna@example.com","max@tempmail.example"]}'For developers
Address in. Signals out.
Single check and batch, each with one POST and a direct response.
- JSON response in milliseconds
Direct response, no job polling.
- Publishable keys
Calls directly from the browser, keys restricted to your domains.
- MCP included
Fake Email Detection as a tool in Claude, ChatGPT and Cursor.
PaperOffice Tools
Try it for free
Free tools on this topic.
Sovereignty
Your data stays in Europe.
Our own data center in the EU, own hardware, no sharing with third parties, deletion after processing.
EU data centerISO 27001SOC 2 Type II · in preparationGDPR
Security and compliance Location
Own infrastructure in the EU, no US cloud.
Encryption
AES-256 at rest, TLS 1.3 in transit.
Processing
On RAM disk, processing data deleted after completion.
Evidence
ISO/IEC 27001 certified (certificate available under NDA); SOC 2 Type II in preparation.
Questions and answers
Everything about Fake Email Detection
What is checked?
Whether the domain is a disposable service, whether the address is syntactically valid, whether an MX record exists and whether the address appears deliverable.
Are emails sent to the address?
No. The check works with domain lists, DNS and signals, without sending a message.
Can I check existing data?
Yes. The batch endpoint checks many addresses in one call, billed per address. As a workflow, new contacts are checked automatically.
Can I also check phone numbers and websites?
Yes. The validation API checks phone numbers in E.164 format with carrier lookup and websites for DNS, SSL and reachability.
What does a call cost?
From €0.01 per request. €1 equals 1,000 credits. These prices apply to API and MCP, where every call costs at least 10 credits; in the app, checks cost less. No subscription, no base fee.
Can I use the API directly in the browser?
Yes. With a publishable key you call the API from your web app without your own server. The key is restricted to your domains.
Where are requests processed?
In our own data center in the EU on own hardware. No sharing with third parties, encrypted with TLS 1.3. ISO/IEC 27001 certified; SOC 2 Type II in preparation.
Case Studies
Customer Success Stories
Discover how businesses transformed their processes with PaperOffice AI.
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Kumul Minerals Holdings Limited
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Industry & Manufacturing efficiency increase
K60-Gitterrostsysteme GmbH & Co. KG
Technical documentation and order processing now run fully automatically.
Public Administration faster processing
Ayuntamiento de Carrión de los Condes
Digitization has revolutionized our administration. Citizen inquiries are now processed in minutes instead of days.
Health & Medicine less administrative effort
Kardiologie Waldstrasse
Patient records, medical reports, and referrals are automatically captured and classified. Our practice team finally has time for their patients.
Hospitality & Entertainment faster document assignment
Okada Manila
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Regional Bank faster credit review
PT Bank BPD DIY
Loan applications and compliance documents are now processed in minutes instead of hours. The regulatory review is fully automated.
Construction & Real Estate time saved
IDC Construcción
Construction project documentation and compliance are now digital and traceable.
Hospitality & Tourism fewer paper processes
The Palms Beach Hotel & Spa
Check-in forms, invoices, and guest communications are fully digital. Our concierge team now focuses on providing excellent service.
Energy & Gas Stations faster receipt processing
Q1 Energie AG
Gas station billing, supplier documents, and compliance records from over 250 stations are automatically processed and archived.
Pharma & Labels compliance documentation
Schreiner MediPharm GmbH & Co. KG
GMP-relevant documentation for pharmaceutical functional labels now runs automatically. Audit trails are seamless and instantly accessible.
Construction & Timber less planning effort
Baufritz GmbH & Co. KG
Blueprints, permits, and customer files for our wooden houses are now managed centrally. After six generations, we are finally paperless.
E-Commerce & Retail faster order processing
Roastmarket GmbH
Supplier contracts, certificates, and customs papers for hundreds of roasteries worldwide are automatically captured and assigned to the correct product.
Logistics & Transport faster freight documentation
Streck Transport GmbH
Temperature logs, CMR waybills, and food certificates are automatically scanned and assigned to the order. Misallocations are a thing of the past.
Logistics & Transport less search time
Nosta Group GmbH
Heavy transport permits, route plans, and project documentation are now instantly accessible digitally. No more searching through folders.
Logistics & Transport efficiency increase
Lagermax Lagerhaus und Speditions AG
Customs documents, warehouse receipts, and shipping orders for our Eastern European network are automatically classified. Four generations of logistics, finally digital.
Printing & Packaging digitized production documentation
Marzek Etiketten+Packaging GmbH
Printing specifications, customer approvals, and material certificates are now accessible centrally. The production error rate has dropped to near zero.
Packaging & Labels less administrative effort
Permapack AG
Sustainability certificates, supplier contracts, and customer specifications are processed automatically. Swiss precision, now also digital.
Construction & Real Estate faster project execution
Nordlin Ehitus OÜ
Building permits, subcontractor contracts, and acceptance protocols for our commercial properties are now fully documented digitally.
Real Estate & Management faster contract closing
Uus Maa Kinnisvarabüroo OÜ
Purchase agreements, exposés, and customer files from over 30 years of market leadership are now digitally searchable. Every agent finds everything in seconds.
Logistics & Freight faster customs clearance
CF&S Estonia OÜ
Ocean freight documents, customs declarations, and bills of lading are automatically captured. Baltic Sea logistics has never been so efficient.
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Thousands of custom packaging orders per week, including design approvals, print data, and delivery documents. PaperOffice keeps it all together.
Laboratory & Medical Technology compliance rate
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Pathology lab documentation and device certifications are now fully automated. Seamless traceability for every specimen.
Regional Bank faster loan processing
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Loan documents, security papers, and customer correspondence are processed in minutes instead of hours. The regulatory review is seamless.
Steel Construction & Industry efficiency increase
Yamato Kogyo Co., Ltd.
Technical specifications, quality certificates, and recycling protocols for our steel production are central and instantly accessible.
Pharma & Labels faster approval processes
IL Kwang Label Co., Ltd.
Pharma and cosmetic label specifications with regulatory requirements are automatically checked and approved. No more manual checklists.
Fintech & Wealth Management automated KYC verification
Endowus Pte. Ltd.
KYC documents, investment reports, and regulatory filings are classified in seconds. As an MAS-regulated robo-advisor, seamless compliance is essential.
Logistics & Transport faster hazmat documentation
Freight Links Express Holdings Ltd.
Safety data sheets, transport permits, and ADR documents for chemical logistics are automatically assigned. Zero tolerance for errors.
Luxury & Jewelry efficiency gain
Selberan Sdn Bhd
Certificates of authenticity, supplier records, and customer warranties for our pearl collections are automatically archived and instantly accessible.
Commercial Bank less processing time
Kiatnakin Phatra Bank PCL
SME loan applications, security documents, and regulatory reports are automatically classified. Our advisors have more time for customer consulting.
Private Bank digitized client records
Hatton National Bank PLC
Customer files from over 135 years of banking history are being successively digitized. 5,000 employees now have instant access to all documents.
Development Bank faster microfinance review
BRAC Bank PLC
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Precision Metal & Manufacturing efficiency increase
Gulf Metal Industries LLC
CNC manufacturing protocols, material certificates, and customer specifications for oil, gas, and aerospace projects are now fully documented digitally.
GovTech & IT digitized government documents
Elm Company
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Specialty Steel & Industry faster quality documentation
Bisalloy Steels Pty Ltd
Material certificates, hardening protocols, and customer specifications are automatically assigned to the correct order. Australia's only Q&T manufacturer, now paperless.
Steel Construction & Manufacturing less administration overhead
Pacific Steel Fabrications Ltd.
Weld seam protocols, structural calculations, and project plans are managed digitally. Our workshop teams have access in real time.
Precision Parts & Manufacturing efficiency gain
Maple Precision Metalworks Ltd.
Aerospace certificates, CNC programs, and customer tolerances are automatically classified. AS9100 evidence has never been this easy to produce.
Fintech & Payments automated contract review
Clip SA de CV
Merchant contracts, KYC documents, and transaction receipts for hundreds of thousands of SMEs are processed in seconds. Mexico's payment revolution, paperless.
Premium Winery less documentation effort
Bodega Catena Zapata
Harvest documentation, export certificates, and quality protocols for our high-altitude Malbecs are automatically archived. 120 years of winemaking tradition, now digital.
Digital Banking automated KYC verification
Ualá
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Fintech & Payments faster onboarding
Yoco Technologies (Pty) Ltd
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E-Commerce & Organic efficiency gain
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Fintech & Payments automated compliance
Flutterwave Inc.
Regulatory documents from 33 African countries, partner contracts, and audit trails are managed fully automatically. An enterprise DMS for a $3 billion fintech.
Pharma & Healthcare time saved
HealthInLoc Apotheke Lissabon
Prescriptions and medication management now run fully automatically. More time for our patients.
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Seniorenresidenz am Park
Our caregivers finally have more time for residents instead of paperwork.
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Medicine & Healthcare less manual effort
Via Creative Leipzig
Patient records management is now a breeze. Everything automatically captured and archived.
Estate Services faster processing
Naslednik Serbien
Inheritance and estate documentation is now efficient and error-free.
Real Estate & Management efficiency gain
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The documentation of our care services is now digital and automated. More time for our patients.
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Doratec Maschinenbau
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Tax Advisory & Legal efficiency increase in receipt processing
Cebras Steuerberatung
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IT & Consulting efficiency increase
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Measurable customer success
90%
compliance rate
Kumul Minerals Holdings Limited92%
faster print approvals
The Challenge Printing Company Inc.85%
efficiency increase
K60-Gitterrostsysteme GmbH & Co. KG80%
faster processing
Ayuntamiento de Carrión de los Condes"Enterprise document management for all our mining operations. World class."
Mining & Resources "FDA-regulated pharmaceutical labels require seamless documentation. PaperOffice has reduced our approval process from days to hours."
Printing & Packaging "Technical documentation and order processing now run fully automatically."
Industry & Manufacturing "Digitization has revolutionized our administration. Citizen inquiries are now processed in minutes instead of days."
Public Administration "Patient records, medical reports, and referrals are automatically captured and classified. Our practice team finally has time for their patients."
Health & Medicine "8,000 employees and thousands of guest documents every day. PaperOffice has completely digitized our back-office processes."
Hospitality & Entertainment "Loan applications and compliance documents are now processed in minutes instead of hours. The regulatory review is fully automated."
Regional Bank "Construction project documentation and compliance are now digital and traceable."
Construction & Real Estate "Check-in forms, invoices, and guest communications are fully digital. Our concierge team now focuses on providing excellent service."
Hospitality & Tourism "Gas station billing, supplier documents, and compliance records from over 250 stations are automatically processed and archived."
Energy & Gas Stations "GMP-relevant documentation for pharmaceutical functional labels now runs automatically. Audit trails are seamless and instantly accessible."
Pharma & Labels "Blueprints, permits, and customer files for our wooden houses are now managed centrally. After six generations, we are finally paperless."
Construction & Timber "Supplier contracts, certificates, and customs papers for hundreds of roasteries worldwide are automatically captured and assigned to the correct product."
E-Commerce & Retail "Temperature logs, CMR waybills, and food certificates are automatically scanned and assigned to the order. Misallocations are a thing of the past."
Logistics & Transport "Heavy transport permits, route plans, and project documentation are now instantly accessible digitally. No more searching through folders."
Logistics & Transport "Customs documents, warehouse receipts, and shipping orders for our Eastern European network are automatically classified. Four generations of logistics, finally digital."
Logistics & Transport "Printing specifications, customer approvals, and material certificates are now accessible centrally. The production error rate has dropped to near zero."
Printing & Packaging "Sustainability certificates, supplier contracts, and customer specifications are processed automatically. Swiss precision, now also digital."
Packaging & Labels "Building permits, subcontractor contracts, and acceptance protocols for our commercial properties are now fully documented digitally."
Construction & Real Estate "Purchase agreements, exposés, and customer files from over 30 years of market leadership are now digitally searchable. Every agent finds everything in seconds."
Real Estate & Management "Ocean freight documents, customs declarations, and bills of lading are automatically captured. Baltic Sea logistics has never been so efficient."
Logistics & Freight "Thousands of custom packaging orders per week, including design approvals, print data, and delivery documents. PaperOffice keeps it all together."
E-Commerce & Packaging "Pathology lab documentation and device certifications are now fully automated. Seamless traceability for every specimen."
Laboratory & Medical Technology "Loan documents, security papers, and customer correspondence are processed in minutes instead of hours. The regulatory review is seamless."
Regional Bank "Technical specifications, quality certificates, and recycling protocols for our steel production are central and instantly accessible."
Steel Construction & Industry "Pharma and cosmetic label specifications with regulatory requirements are automatically checked and approved. No more manual checklists."
Pharma & Labels "KYC documents, investment reports, and regulatory filings are classified in seconds. As an MAS-regulated robo-advisor, seamless compliance is essential."
Fintech & Wealth Management "Safety data sheets, transport permits, and ADR documents for chemical logistics are automatically assigned. Zero tolerance for errors."
Logistics & Transport "Certificates of authenticity, supplier records, and customer warranties for our pearl collections are automatically archived and instantly accessible."
Luxury & Jewelry "SME loan applications, security documents, and regulatory reports are automatically classified. Our advisors have more time for customer consulting."
Commercial Bank "Customer files from over 135 years of banking history are being successively digitized. 5,000 employees now have instant access to all documents."
Private Bank "Microcredit applications and compliance documents for millions of customers are now processed in minutes instead of days. A game changer for financial inclusion."
Development Bank "Hundreds of thousands of delivery notes and return slips per day are processed automatically. Vietnam's leading e-commerce logistics provider, now paperless."
E-Commerce Logistics "CNC manufacturing protocols, material certificates, and customer specifications for oil, gas, and aerospace projects are now fully documented digitally."
Precision Metal & Manufacturing "Vision 2030 requires complete digitization. PaperOffice processes government documents for Saudi Arabia's digital backbone."
GovTech & IT "Material certificates, hardening protocols, and customer specifications are automatically assigned to the correct order. Australia's only Q&T manufacturer, now paperless."
Specialty Steel & Industry "Weld seam protocols, structural calculations, and project plans are managed digitally. Our workshop teams have access in real time."
Steel Construction & Manufacturing "Aerospace certificates, CNC programs, and customer tolerances are automatically classified. AS9100 evidence has never been this easy to produce."
Precision Parts & Manufacturing "Merchant contracts, KYC documents, and transaction receipts for hundreds of thousands of SMEs are processed in seconds. Mexico's payment revolution, paperless."
Fintech & Payments "Harvest documentation, export certificates, and quality protocols for our high-altitude Malbecs are automatically archived. 120 years of winemaking tradition, now digital."
Premium Winery "Millions of user verifications and regulatory documents are processed fully automatically. Scaling without paper."
Digital Banking "Merchant onboarding documents and compliance records for Africa's leading payment provider are processed in minutes instead of days."
Fintech & Payments "Organic certificates, supplier audits, and product labels for thousands of natural products are automatically checked and archived."
E-Commerce & Organic "Regulatory documents from 33 African countries, partner contracts, and audit trails are managed fully automatically. An enterprise DMS for a $3 billion fintech."
Fintech & Payments "Prescriptions and medication management now run fully automatically. More time for our patients."
Pharma & Healthcare "Centuries-old documents are now digitally searchable. A milestone for our historical archives."
Religious Institution "Our caregivers finally have more time for residents instead of paperwork."
Care & Health "500,000+ records digitized. Our deputies now find all information instantly."
Government & Administration "Patient records management is now a breeze. Everything automatically captured and archived."
Medicine & Healthcare "Inheritance and estate documentation is now efficient and error-free."
Estate Services "Digital property management for all our residential complexes. Tenants and owners are thrilled."
Real Estate & Management "With PaperOffice, we have accelerated our invoice processing by 99%. The AI automatically recognizes all relevant data and assigns it correctly."
Industry & Packaging "PaperOffice has become indispensable to our daily work. Orders, quotes, and invoices are now automated."
Trades & Crafts "The documentation of our care services is now digital and automated. More time for our patients."
Care & Health "Technical drawings, bills of materials, and quality protocols are instantly searchable. A search that used to take 30 minutes now takes 30 seconds."
Mechanical Engineering & Manufacturing "Client receipts, tax assessments, and annual financial statements are automatically sorted and assigned to the correct client. Receipt chaos is a thing of the past."
Tax Advisory & Legal "Project documentation, SLAs, and customer communication for our IT consulting projects are automatically classified and archived."
IT & Consulting 30sec
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