Emails decay at the rate of 25-30% per year, which is roughly about 7% per quarter for a clean list. So it is imperative to refresh your lists once in 2 months to ensure that your email sending tools as well as your marketing automation tools do not lock you out or your sending reputations takes a hit. Most of the top email automation tools block the customers with bounce rates exceeding 4%.

Log In: Sign in to your Endbounce account on the dashboard at Endbounce.com. Navigate to Bulk Verification: From the dashboard, select the “Bulk Verification” or “Upload List” option (typically found in the main menu or sidebar).

Upload Your File: Click the “Upload” button and choose your email list file. Endbounce supports common formats like CSV or Excel (.xlsx, .xls). Ensure your file has a column with email addresses (other columns like names are optional).
Map Email Column: If prompted, select the column in your file that contains the email addresses for verification.

Start Verification: Click “Verify” to begin the process. Endbounce will analyze your list for validity, syntax, and risky emails (e.g., spam traps or disposable addresses).

Review Results: Once verification is complete (typically within minutes, depending on list size), you’ll receive a detailed report categorizing emails as valid, invalid, or risky. You can download the cleaned list or export specific segments.

At Endbounce, we prioritize your data privacy and do not share or sell your email lists with any third parties. When you upload a list for verification, it is processed securely on our encrypted servers and used solely for the purpose of validation. We comply with data protection regulations like GDPR and CCPA, ensuring your email lists remain confidential and are not used for any other purpose, such as marketing or resale. For more details, please review our Privacy Policy at [Endbounce.com/privacy]

A role-based email is an email address tied to a specific role or function within an organization, rather than an individual person. Examples include addresses like info@company.com, support@company.com, sales@company.com, or admin@company.com. These emails are typically managed by multiple people or departments and are used for general inquiries or specific business functions.
Remove role-based emails if your goal is highly personalized, engagement-driven campaigns (e.g., B2C or targeted B2B), as they are less likely to yield conversions and may hurt deliverability.

A simple 2 click setup to pay by your credit card after you click subscribe/upgrade or “buy credits”. For any payment issues, reach out to our 24/7 support team via live chat, email How secure is my data with NeverBounce?

At Endbounce, we prioritize the security of your data with industry-leading safeguards to protect your email lists and personal information. Here’s how we ensure your data is secure:

Encryption: All data uploads, including email lists, are protected with military-grade encryption (e.g., AES-256) during transmission and storage to prevent unauthorized access.

Secure Servers: Your data is stored on highly secure, enterprise-level servers with strict access controls and regular security

GDPR and CCPA Compliance: We adhere to global data protection regulations like GDPR and CCPA, ensuring your data is handled responsibly and in compliance with privacy laws.

No Data Sharing: As stated in our Privacy Policy, your email lists and personal information are never shared, sold, or used for any purpose other than email verification. We do not send emails to your contacts during the verification process.

Data Retention: Uploaded email lists are securely stored in your Endbounce dashboard for your convenience but are automatically deleted after a set period (e.g., 90 days) unless you choose to delete them sooner.

Access Controls: We implement administrative, technical, and physical safeguards to protect against unauthorized access, including role-based access for our team and two-factor authentication for user accounts.

Regular Security Updates: Our systems are continuously monitored and updated to address potential vulnerabilities, ensuring robust protection against emerging threats.

At Endbounce, we understand flexibility is key for our users. Any credits you purchase or receive (including free credits upon signup) do not expire, allowing you to use them at your leisure without worrying about losing their value. Whether you're verifying emails in real-time or processing bulk lists, your credits remain available in your Endbounce account until you use them. You can check your credit balance anytime in the “Account” or “Billing” section of your dashboard at Endbounce.com. For any questions about managing your credits, our 24/7 support team is available via live chat or email at [support@endbounce.com] .

For bulk email verification, Endbounce supports the following file formats to ensure a seamless upload process:

CSV (.csv): Comma-separated value files, commonly used for email lists. Ensure your CSV file has one email address per row, with emails in a single column. Additional columns (e.g., names, addresses) are supported and will remain intact in the verification report.

Excel (.xls, .xlsx): Microsoft Excel spreadsheets are accepted, provided emails are in a single column on a single sheet. Other columns with related data are preserved.

Plain Text (.txt): Simple text files with one email address per line, ideal for straightforward lists without additional data.

Endbounce allows you to upload email lists for bulk verification with the following guidelines:

Minimum List Size: There is no minimum list size for bulk email verification. You can upload a list with as few as 1 email address, making it flexible for small-scale verifications or testing purposes.

Maximum List Size: Endbounce supports large-scale uploads, with a typical maximum file size of 50MB for a single upload, which can accommodate approximately 500,000 to 1,000,000 email addresses in CSV format, depending on additional data (e.g., names or other columns). For lists exceeding this size, you can split them into multiple files or contact our support team at [support@endbounce.com] for assistance with larger uploads or custom solutions.

Plain Text (.txt): Simple text files with one email address per line, ideal for straightforward lists without additional data.

Yes, Endbounce offers a robust real-time email verification API that allows you to verify email addresses instantly as they are entered into your website, app, or forms. Our API integrates seamlessly with your platform to check email validity, syntax, and risk (e.g., disposable emails or spam traps) at the point of capture, ensuring only valid emails enter your database. This helps reduce bounce rates, improve deliverability, and maintain a clean email list.

“Unknown” or “unverifiable” emails are those Endbounce can’t confirm as valid or invalid due to issues like unresponsive servers, greylisting, or catch-all domains. These are flagged as “unknown” in your verification report with reasons (e.g., “no MX record” or “temporary failure”). No credits are deducted for these emails, allowing re-verification later without cost. We recommend re-checking after 5–10 minutes or removing them to avoid bounce risks. For details, visit Endbounce.com or email [support@endbounce.com].

Yes, Endbounce allows you to verify only new leads instead of re-verifying your entire email list, saving you time and credits. You can achieve this in two ways:

Real-Time API Verification: Integrate Endbounce’s API into your website, app, or forms to verify new leads instantly as they are collected (e.g., during signups or form submissions). The API checks each email for validity, syntax, and risk (e.g., disposable or spam trap emails) at the point of capture, ensuring only valid leads enter your database. This eliminates the need to verify existing lists repeatedly. Learn more at Endbounce.com/api-docs.quickemailverification.com

Bulk Verification for New Leads:If you have a batch of new leads, you can upload a file (e.g., CSV, Excel, or TXT) containing only those new email addresses for verification. Endbounce processes these separately, so you don’t need to re-upload your entire list. Simply ensure the file includes only the new leads, with one email per row.

Yes, email verification with Endbounce can positively impact your domain reputation by improving email deliverability and reducing factors that harm your sender score. Regular verification helps maintain a clean email list, which is critical for a strong domain reputation. Here’s how:

Reduces Bounce Rates: Verifying emails removes invalid or inactive addresses, lowering hard and soft bounce rates. High bounce rates signal poor list quality to email service providers (ESPs), negatively affecting your domain reputation.mailmodo.combenchmarkemail.com

Prevents Spam Traps:Endbounce identifies risky emails, like spam traps, which can damage your reputation if you send to them. Avoiding these protects your domain from being flagged by ISPs.allegrow.co

Improves Engagement: Sending to verified, active email addresses increases open and click-through rates, signaling to ESPs that your emails are valuable, which boosts your reputation.benchmarkemail.com

Avoids Blacklists:By removing invalid or risky emails (e.g., role-based or disposable addresses), Endbounce helps prevent your domain from landing on blacklists, which can severely harm your reputation.mailtrap.io

Yes, Endbounce automatically removes duplicates and syntax errors during bulk email verification at no additional cost, ensuring your list is clean and efficient.

Duplicates: Endbounce identifies and removes duplicate email addresses (e.g., the same email appearing multiple times in your list) before verification begins. This prevents unnecessary credit usage and ensures you only pay for unique emails.

Syntax Errors:Emails with invalid syntax (e.g., missing “@” symbol, incorrect domain format, or improper characters) are flagged as “invalid” and removed from your list during verification. This helps maintain list quality and reduces bounce risks.

After running a real-time or bulk email verification with Endbounce, you’ll receive a detailed report categorizing each email address. Here’s how to interpret the results:

Valid: Emails that are deliverable, with correct syntax, active domains, and functioning mailboxes. These are safe to use in your campaigns.

Invalid: Emails that are undeliverable due to issues like non-existent addresses, invalid domains, or syntax errors (e.g., missing “@”). Remove these to avoid hard bounces and protect your sender reputation.

Risky: Emails that may pose risks, such as role-based emails (e.g., info@company.com), disposable/temporary addresses, or spam traps. Use cautiously, as they may harm deliverability or engagement.

Unknown/Unverifiable: Emails that couldn’t be verified due to temporary issues (e.g., server downtime, greylisting) or catch-all domains. Re-verify these after 5–10 minutes or exclude them to minimize soft bounce risks. No credits are charged for these emails.

Duplicates: Identical email addresses found in your list. Endbounce removes these automatically before verification to save credits.