Frequently Asked Questions

Find answers to the most common questions about email validation and our services. If you can't find what you're looking for, feel free to contact us directly.

General Questions

What is email validation?

Email validation is the process of verifying that an email address is valid, deliverable, and safe to send to. It involves multiple layers of verification:

  • Syntax checking (proper format of email addresses)
  • Domain validation (checking if the domain exists and is active)
  • Mailbox verification (confirming the specific email address exists)
  • Spam trap detection (identifying potentially harmful addresses)
  • Role-based email identification (like info@, support@, etc.)
  • Disposable email detection (temporary email addresses)

The goal is to help businesses maintain clean email lists, reduce bounce rates, and improve deliverability for their email campaigns.

Why is email validation important?

Email validation is crucial for several reasons:

  • Reduced Bounce Rates: Invalid emails that bounce damage your sender reputation and can lead to blacklisting.
  • Improved Deliverability: ISPs and email providers monitor bounce rates—keeping them low ensures better inbox placement.
  • Higher ROI: By sending only to valid addresses, you maximize your marketing budget and improve conversion rates.
  • Better Analytics: Clean data provides more accurate metrics on email campaign performance.
  • Fraud Prevention: Validation helps identify fake or suspicious emails used for fraudulent activities.
  • Compliance: Helps maintain compliance with email regulations by ensuring you only contact real users.

In short, email validation helps protect your sender reputation, improves campaign performance, and saves you money on your email marketing efforts.

How accurate is email validation?

At Email-Validation.co, our verification process achieves an accuracy rate of up to 99.9%. However, it's important to understand that email validation is not always 100% accurate due to several factors:

  • Some mail servers have configurations that prevent complete verification
  • Email addresses may become invalid after validation due to account closures or domain changes
  • Temporary server issues at the recipient's mail server
  • Advanced anti-spam measures that block validation attempts

We use a multi-layered approach that combines syntax checking, domain validation, MX record verification, and mailbox verification to provide the highest possible accuracy. Our system is constantly updated to adapt to changes in email server technologies and protocols.

What types of email validation checks do you perform?

Our comprehensive validation process includes multiple verification layers:

  1. Syntax Validation: Checks if the email follows the correct format (username@domain.com).
  2. Domain Validation: Verifies if the domain exists and is active.
  3. MX Record Check: Confirms the domain has valid mail exchange records that can receive email.
  4. SMTP Verification: Connects to the mail server to verify if the specific mailbox exists without sending an email.
  5. Disposable Email Detection: Identifies temporary email addresses that are likely to become invalid quickly.
  6. Role-Based Email Detection: Flags generic addresses like info@, sales@, support@, etc.
  7. Free Email Provider Check: Identifies free email accounts (Gmail, Yahoo, etc.).
  8. Spam Trap Detection: Helps identify potential spam traps that could harm your sender reputation.
  9. Typo Detection: Identifies common misspellings in domain names.
  10. Catch-All Domain Detection: Identifies domains configured to accept all emails regardless of whether the specific address exists.

Each email receives a comprehensive status report with these verification results, helping you make informed decisions about your email list.

Our Service

How does your email validation service work?

Our email validation service works in three simple steps:

  1. Upload Your List: Upload your email list in CSV, TXT, XLS, or XLSX format through our secure platform. You can also validate individual emails or use our API for integration with your systems.
  2. Validation Process: Our system automatically performs multiple validation checks on each email address. This includes syntax validation, domain verification, mailbox checking, and risk assessment without sending actual emails to the addresses.
  3. Get Results: Once the validation is complete, you'll receive a comprehensive report that categorizes each email as valid, invalid, or risky. You can download the cleaned list in your preferred format.

The entire process is secure, with industry-standard encryption to protect your data. Our system is designed to process lists quickly—validating thousands of emails in minutes depending on the size of your list and current server load.

How long does email validation take?

The time required to validate your email list depends on several factors:

  • List Size: Larger lists will naturally take longer to process.
  • Validation Depth: Our comprehensive validation process performs multiple checks on each email to ensure accuracy.
  • Server Response Times: Some recipient mail servers respond more slowly than others, which can affect overall processing time.
  • Current System Load: Processing times may vary depending on overall system usage.

As a general guideline:

  • Small lists (up to 1,000 emails): Usually complete within a few minutes
  • Medium lists (1,000-10,000 emails): Typically take 10-30 minutes
  • Large lists (10,000-100,000 emails): May take 1-3 hours
  • Very large lists (100,000+ emails): Processed in batches, may take several hours

Our system is optimized for both speed and accuracy. We implement parallel processing technologies to validate multiple emails simultaneously while ensuring reliable results.

Is my email data secure with your service?

Yes, data security is one of our top priorities. We implement strict security measures to protect your email lists:

  • Encrypted Data Transfer: All uploads and downloads use secure HTTPS connections with TLS encryption.
  • Temporary Storage: Your email lists are stored only for the duration of the validation process and automatically deleted afterward.
  • No Data Sharing: We never sell, rent, or share your email data with any third parties.
  • Access Controls: Only authorized personnel have access to our systems, with strict authentication protocols.
  • Regular Security Audits: Our systems undergo regular security assessments to identify and address potential vulnerabilities.
  • GDPR Compliance: Our processes comply with GDPR and other relevant data protection regulations.

Your data is processed on secure servers with firewall protection and intrusion detection systems. We understand the confidential nature of your email lists and treat them with the utmost care and respect for privacy.

What file formats do you support for email list validation?

We support multiple file formats for uploading your email lists:

  • CSV (Comma-Separated Values) - The most common format, which can be exported from most CRM systems and spreadsheet applications
  • TXT (Text Files) - Simple text files with one email address per line
  • XLS/XLSX (Microsoft Excel) - Native Excel file formats
  • JSON - For API integrations and more technical implementations

For CSV and Excel files, our system automatically detects the column containing email addresses. If your file has a complex structure, you can manually specify which column contains the emails during the upload process.

There's a file size limit of 100MB per upload, but you can split larger lists into multiple files if needed. After validation, you can download your results in any of these formats, regardless of the original input format.

Do you offer an API for email validation?

Yes, we offer a robust API that allows you to integrate our email validation services directly into your applications, websites, or workflows. Our API is designed for developers and businesses that need real-time validation or want to automate their email verification process.

Key features of our API:

  • RESTful architecture for easy integration
  • Comprehensive validation results with detailed status codes
  • Support for single email validation or batch processing
  • High availability with 99.9% uptime guarantee
  • Rate limiting based on your subscription plan
  • Detailed documentation with code examples in multiple languages

API access is included in all our paid plans, with usage limits corresponding to your subscription level. Our Professional and Enterprise plans include higher API call limits and priority access.

For detailed documentation, sample code, and API key management, please log in to your dashboard and visit the API section.

Technical Details

How can I tell if an email address is valid?

Determining if an email address is valid involves multiple technical checks. Our system categorizes emails based on these verification steps:

  1. Valid: The email passed all verification checks and is safe to send to.
  2. Invalid: The email failed critical checks such as syntax, domain existence, or mailbox verification.
  3. Risky: The email passed basic checks but has characteristics that might impact deliverability:
    • Role-based addresses (info@, sales@, admin@)
    • Disposable or temporary email services
    • Free email providers with less strict signup verification
    • Catch-all domains that accept all email regardless of username
  4. Unknown: We couldn't definitively verify or invalidate the email due to server configuration limitations.

Each validation result includes a detailed status code and explanation of why an email was classified as valid, invalid, or risky. This helps you make informed decisions about which addresses to include in your campaigns.

For critical email campaigns, we recommend removing both invalid and risky addresses to maximize deliverability and sender reputation.

Can email validation prevent all bounces?

While email validation significantly reduces bounce rates, it cannot eliminate all bounces for several reasons:

  • Timing Changes: An email address that was valid during verification might become invalid later if the user closes their account or changes their email address.
  • Server Configuration: Some mail servers are configured to prevent complete verification without actually sending an email.
  • Temporary Issues: Recipient mail servers might experience temporary outages or configuration changes that affect deliverability.
  • Mailbox Full: A valid mailbox might reject emails if it's over quota (full).
  • Content Filtering: Even with a valid email address, messages might bounce due to content filtering or blocklisting of your sending infrastructure.

That said, our customers typically experience a 95-99% reduction in bounce rates after implementing our email validation service. The exact improvement depends on the initial quality of your list and how frequently you validate.

For best results, we recommend:

  • Regularly validating your email list (every 3-6 months)
  • Immediately validating any new email addresses collected
  • Using a combination of validation and engagement-based list cleaning
Does email validation check for spam traps?

Yes, our service includes spam trap detection as part of our comprehensive validation process. Spam traps are email addresses specifically designed to identify and catch spammers. They can severely damage your sender reputation if you send to them.

We check for several types of potential spam traps:

  • Pure Spam Traps: Addresses that were never owned by real users but are published online to be harvested by scrapers.
  • Recycled Spam Traps: Previously valid addresses that were abandoned and later converted into spam traps after a period of inactivity.
  • Typo Domain Traps: Misspelled versions of popular domains (e.g., gmial.com instead of gmail.com) that are specifically registered to catch emails with typos.

While no service can identify 100% of spam traps (as their effectiveness relies on being undetectable), our system uses advanced pattern recognition and known spam trap domains to flag potentially problematic addresses.

We mark these high-risk addresses in your validation results, allowing you to remove them from your sending list. Removing potential spam traps is crucial for maintaining a good sender reputation and ensuring high deliverability rates.

How often should I validate my email list?

The optimal frequency for email validation depends on several factors:

  • List Growth Rate: Lists that grow quickly should be validated more frequently.
  • List Age: Older lists typically contain more invalid addresses as people change jobs or abandon email accounts.
  • Industry: Industries with high turnover (like technology or recruitment) often see faster email decay rates.
  • Email Collection Methods: Lists built through less stringent opt-in processes may require more frequent validation.

As a general guideline, we recommend:

  • Quarterly Validation: For most businesses, validating your entire list every 3 months helps maintain good list hygiene.
  • Monthly Validation: For high-volume senders or businesses in high-turnover industries.
  • Real-time Validation: For new signups and form submissions, validate emails at the point of collection using our API.
  • Pre-Campaign Validation: For critical campaigns, validate your list just before sending, especially if it's been more than a month since the last validation.

Email lists typically decay at a rate of 2-3% per month on average. This means that even without adding new contacts, about 25-30% of your list could become invalid within a year if not regularly maintained.

Benefits & Results

How does email validation improve deliverability?

Email validation improves deliverability through several interconnected mechanisms:

  1. Bounce Rate Reduction: By removing invalid email addresses before sending, your bounce rate decreases significantly. Email service providers like Gmail, Yahoo, and Outlook monitor bounce rates closely—high rates trigger spam filters.
  2. Sender Reputation Protection: Your sender reputation is a score that email providers assign to your sending domain and IP. Sending to invalid addresses damages this score, while maintaining clean lists improves it over time.
  3. Spam Trap Avoidance: Validating emails helps identify and remove potential spam traps, which are specifically designed to catch senders with poor list hygiene practices.
  4. Engagement Improvement: With invalid addresses removed, your engagement metrics (opens, clicks) naturally improve as a percentage of emails sent, which positively influences how email providers view your campaigns.
  5. Complaint Reduction: Many invalid or outdated email addresses may now belong to different people who might mark your messages as spam. Validation helps prevent these ownership changes from affecting your reputation.

Email providers have become increasingly sophisticated in filtering unwanted messages. They look at not just content but sender behavior patterns. Clean list practices signal to these providers that you're a legitimate sender who respects email best practices.

The deliverability improvements compound over time—as your sender reputation improves, each subsequent campaign benefits from better inbox placement.

What results can I expect from email validation?

Email validation delivers multiple measurable benefits for your email marketing efforts:

  • Reduced Bounce Rates: Most customers see their hard bounce rates drop to below 1%, compared to industry averages of 2-5%.
  • Improved Deliverability: Clean lists help emails reach the inbox rather than spam folders, typically improving inbox placement by 10-25%.
  • Higher Open Rates: With better inbox placement, customers often see open rates improve by 15-30%.
  • Cost Savings: Many email service providers charge based on the number of emails sent. Removing invalid addresses can reduce costs by 10-20%.
  • Better Sender Reputation: Lower bounce rates improve your sender reputation, which has a compounding positive effect on all your email campaigns.
  • More Accurate Metrics: With invalid addresses removed, your campaign analytics more accurately reflect engagement with real potential customers.

The exact results you'll see depend on the initial quality of your list, your industry, and how frequently you validate. Generally, the poorer the initial list quality, the more dramatic the improvement you'll experience.

Many customers also report indirect benefits like increased conversion rates and ROI from email campaigns, as their messages reach more engaged, legitimate users.

Is email validation worth the investment?

Email validation is one of the most cost-effective investments for businesses that rely on email marketing. Here's a simple ROI analysis:

Costs Without Validation:

  • Higher email service provider costs (paying to send to invalid addresses)
  • Lost revenue from emails not reaching valid customers
  • Reduced campaign effectiveness due to poor deliverability
  • Potential blacklisting requiring expensive remediation
  • Time spent managing bounce reports and complaints

Benefits of Validation:

  • 10-20% reduction in email service provider costs for most businesses
  • 15-30% increase in open rates leading to more conversions
  • Protection of sender reputation and domain value
  • More accurate campaign metrics for better decision-making
  • Reduced risk of being blocklisted by email providers

For a concrete example: If you have 100,000 emails and pay $10 per thousand emails sent with your ESP, removing just 10% invalid addresses saves $100 per campaign. If you send monthly campaigns, that's $1,200 annually in direct savings—often exceeding the cost of validation itself.

This doesn't even account for the increased revenue from better deliverability and higher engagement with the emails that are sent. Most businesses see validation paying for itself within just 1-2 campaigns.

How do I get started with your service?

Getting started with Email-Validation.co is quick and easy:

  1. Create an Account: Sign up for a free account on our website. No credit card is required for the free plan with 100 validations.
  2. Verify Your Email: Click the verification link sent to your email address to activate your account.
  3. Log In and Upload: Once verified, log in to your dashboard and upload your first email list or validate individual emails.
  4. Review Results: After processing, you'll receive a detailed report of valid, invalid, and risky emails.
  5. Download Cleaned List: Download your cleaned list in your preferred format, ready to use in your email campaigns.

If you need more than the free 100 validations, you can easily upgrade to one of our paid plans from your dashboard. Our interface is intuitive and designed for users of all technical levels.

For larger organizations, we offer onboarding assistance and can help with your first validation to ensure everything is set up correctly.

Pricing & Accounts

How does your pricing work?

We offer several flexible pricing options to accommodate different needs and budgets:

  1. Free Plan: 100 email validations at no cost, perfect for trying our service or for very small lists.
  2. Pay as You Go: $5.99 per 1,000 emails, ideal for occasional validation needs with no recurring commitment.
  3. Subscription Plans:
    • Starter: $19/month for up to 5,000 validations
    • Professional: $49/month for up to 25,000 validations
    • Enterprise: $99/month for up to 100,000 validations

All paid plans include full access to our validation features, with differences in volume limits, user accounts, and support priority. Subscription plans offer the best value for regular users.

Unused validations in subscription plans roll over to the next month for up to 3 months. All prices are in USD, and we accept credit cards, PayPal, and other major payment methods.

For organizations with larger validation needs, please contact our sales team for custom enterprise solutions.

What happens if I exceed my plan's validation limit?

When you approach your plan's validation limit, we'll notify you through email and in your dashboard. If you exceed your limit, we offer several flexible options:

  1. Purchase Additional Credits: You can buy extra validation credits at our Pay as You Go rate ($5.99 per 1,000) to cover the immediate need.
  2. Upgrade Your Plan: Switch to a higher-tier plan with more validation capacity, which is more economical for ongoing needs.
  3. Wait for Renewal: If your needs aren't urgent, you can wait until your plan renews with a fresh allocation of validations.

We don't automatically charge you for overages—you decide how to proceed when you reach your limit. Any validation jobs in progress will complete even if they push you slightly over your limit.

For Enterprise customers, we offer more flexible overage terms and can customize solutions based on your specific usage patterns.

Can I cancel or change my plan anytime?

Yes, you have complete flexibility with your subscription:

  • Cancel Anytime: There are no long-term contracts. You can cancel your subscription at any time from your account dashboard with just a few clicks.
  • Plan Changes: You can upgrade or downgrade your plan at any time. Upgrades take effect immediately, while downgrades take effect at the end of your current billing cycle.
  • Refunds: We don't offer refunds for unused portions of your current billing period, but you can continue using the service until the end of the period you've paid for.

When you upgrade, we'll prorate the cost based on the remaining time in your billing cycle. Any unused validations from your previous plan will transfer to your new plan.

For assistance with account changes, our customer support team is available to help guide you through the process.

Do you offer any discounts?

Yes, we offer several ways to save on our email validation services:

  • Annual Plans: Save 20% when you pay annually instead of monthly for any subscription plan.
  • Volume Discounts: For large volume requirements (over 1 million emails), we offer custom pricing with significant discounts.
  • Nonprofit Organizations: We offer special pricing for registered nonprofit organizations. Contact our sales team with proof of nonprofit status.
  • Educational Institutions: Schools and universities are eligible for discounted rates.
  • Referral Program: Earn credits when you refer new customers to our service.

We also run occasional promotions for seasonal discounts or special events. Subscribe to our newsletter to stay informed about these limited-time offers.

For custom pricing or to discuss specific needs, please contact our sales team at sales@email-validation.co.

Still Have Questions?

Contact our team directly and we'll get back to you as soon as possible.

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