Opportunities are one email away.

Experience Impressionwise's industry leading
real-time email verification and threat removal services.

Let our results speak for themselves.

The Result. A highly deliverable, safe list of emails verified
to protect and enhance your sender reputation.

Protect your brands sender reputation.

Industry recognized as an authority in email deliverability
threat intelligence and delivery solutions.

Simple choices, Advanced results

A clean, deliverable email address is the first step toward engaging with your customers.

Our email verification service uses a multi-layered approach to identify areas of concern within your list, validate all email addresses, and protect your sender reputation against a wide range of email-based threats.

The Result. A highly deliverable, safe list of emails that have been verified and designed to protect and enhance your sender reputation.

Endless Opportunities Await

Reach a broader audience and engage more people.

Safeguard your sender reputation by minimizing bounce rates, enabling you to connect with a broader audience more effectively.

Discover why we’re the right choice for your needs:

Improve Email Deliverability . Verified email addresses reduce bounce rates, ensuring your messages reach the right inboxes and improve your sender reputation.
Protect Your Sender Reputation. Removing invalid or malicious addresses helps maintain your credibility with email service providers, keeping you out of spam folders.
Enhance Engagement Rates. A clean email list enables you to focus on genuine recipients who are more likely to interact with your content.
Reduce Security Risks. Eliminating potential threats, such as spam traps or compromised addresses, protects your system and ensures safe communication with your audience.
Optimize Marketing ROI. By targeting verified contacts, you save time and resources, maximizing the return on your email campaigns.
Learn More

Build and maintain an actionable client database.

Ensure the integrity of your database by preventing the entry of inaccurate data, keeping it reliable and actionable.

Here’s why connecting with us is a smart decision:

Ensure Data Accuracy . Verify email addresses to remove invalid, inactive, or misspelled entries, ensuring your database is accurate and reliable for outreach.
Protect Database Integrity . Eliminate threats such as spam traps and malicious addresses to safeguard your client database and maintain its long-term usability.
Boost Campaign Effectiveness . A clean and actionable database enables precise targeting, leading to better engagement rates and more meaningful client interactions.
Learn More

Enhance the effectiveness of your outreach.

Optimize your sales and marketing strategies by concentrating on genuine opportunities and valuable customers.

Top compelling reasons you need to know us:

Improve Deliverability Rates . Verified email addresses ensure your messages reach valid inboxes, reducing bounces and maximizing delivery success.
Protect Your Sender Reputation . Removing invalid and harmful addresses helps maintain a positive sender reputation with email service providers, preventing your emails from being flagged as spam.
Increase Engagement . By focusing on verified, active recipients, you can target a responsive audience, boosting open and click-through rates.
Save Time and Resources . A clean email list allows you to concentrate your efforts on real opportunities, optimizing your campaigns and reducing wasted resources.
Learn More

Stop wondering and start knowing if your emails are safe and try our complimentary evaluation. No credit card required, zero obligations.

Trusted by leading Lead generation companies

Email Verification and Threat Removal Experts

Guard against a wide range of email-based threats while protecting your online reputation. Impressionwise performs over 240 independent, real-time scans analyzing your data for all known problematic or non-deliverable email addresses.

Protect your sender reputation.

Pristine and Recycled Spam Traps

Removal of dedicated and repurposed email spam traps causing poor deliverability.

Pristine Spam Traps . Email addresses that have never provided explicit permission to receive communications from an email marketer are flagged as unauthorized recipients.

Any messages sent to these addresses are classified as unsolicited and may result in the sender being reported to one or more blacklist sites.
Recycled Spam Traps . Email addresses that were once previously owned by a user but have since been abandoned or closed can later be reactivated and monitored.

These reactivated addresses, often referred to as recycled spam traps, are used to identify senders who continue to email inactive or unengaged recipients.

While primarily intended to identify and block spammers, they can also flag email marketers who fail to maintain clean and engaged contact lists, potentially impacting sender reputation and deliverability.
Additional information about our process and threats we scan for:
Leverage our wide-ranging, threat intelligence for a safe, deliverable email outreach.

Dedicated Honeypots and Contributing Moles

Removal of dedicated and collaborative antispam system traps or individuals.

Honeypots . These are email addresses intentionally created and distributed across websites, forums, and other online spaces, designed to be harvested by spammers.

These decoy addresses, often maintained by anti-spam organizations, do not belong to real users and are used to monitor and identify spam activity.
Contributing Moles . This form of feeder email refers to collaborating recipient submissions, domain-level monitors, or individuals who actively contribute to anti-spam solutions.

While they may not have direct ownership of the resources involved, historical evidence often links them to blacklist sites, posing a risk to your sending reputation.
Parked Resources . Leverage our insights to avoid sending email traffic to millions of unused or parked website domains.

These domains are typically not configured for legitimate email use, and any emails sent to their recipients (e.g., catch-all or role-based accounts) are inherently invalid, increasing the likelihood of being flagged as spam.
Our expertise ensures your outreach avoids these forms of hidden traps.

Third-Party Oversight Seeds

Identification of highly litigious and collaborative antispam sinkholes and activists.

These form of email addresses are often added to lists, sometimes without the sender's knowledge, and seeded across various locations online. These addresses may be hidden on websites or submitted through unsubscribe forms.
Our services specifically include the identification and removal of highly litigious and collaborative anti-spam activists, ensuring compliance and reducing potential risks to your organization.

Email Bounce Verification

Confirmation of email validity and verification of mail system acceptance.

Recipient Verification . We provide confirmation that email addresses adhere to a valid format and verify their deliverability to the intended recipient in accordance with RFC standards.

Our email verification process is non-intrusive and ensures that each email address on your list is accurate, valid, deliverable, and ready to send. This helps you maintain the integrity of your email campaigns and improve overall deliverability rates.
Domain Validation . Our Domain Health Check performs comprehensive domain, email, and network performance tests to ensure all domains within your list are online and operating optimally.

This process verifies that receiving MTA’s server responds consistently and correctly, supporting seamless and reliable email delivery.
Boost your email deliverability and maintain a flawless sender reputation.

Typo and Fake Emails

Detection of popular typo domains repurposed as honeypots or traps.

These are spam traps associated with domains intentionally designed to resemble common domain names, such as "yaaho.com" or "ynail.com."
Emails sent to these addresses are often flagged as unsolicited and may result in the sender being reported to one or more blacklist sites.
Ensuring accurate email address collection and validation is critical to avoid these traps and protect your sender reputation.

Email Blackhole and Catch-all Verification

Emails designed to be silently discarded, never being viewed by a human.

Blackhole Verification . Certain email domains are configured to silently discard incoming messages—often referred to as "blackholes".

In these cases, the messages are dropped without notifying the sender, meaning they never reach the intended recipient and are never viewed by a real person.
Catch-All Detection . Catch-All or Accept-All email addresses are associated with domains configured to accept all emails sent to the domain, regardless of the validity of the recipient address.

While these addresses return a valid status during verification, it can be impossible to determine their true deliverability without sending an actual email.

Such configurations are often designed to protect legitimate users by initially accepting messages, only to silently discard them or send bounce notifications afterward.

Detecting these scenarios helps to refine email lists, improve deliverability rates, and avoid unnecessary bounce issues.
Detecting these scenarios helps to refine email lists, improve deliverability rates, and avoid unnecessary bounce issues.

Email Verification and Threat Removal Experts

Guard against a wide range of email-based threats while protecting your online reputation. Impressionwise performs over 240 independent, real-time scans analyzing your data for all known problematic or non-deliverable email addresses.

Protect your sender reputation.

Pristine and Recycled Spam Traps

Removal of dedicated and repurposed email spam traps causing poor deliverability...Learn More.

Pristine Spam Traps . Email addresses that have never provided explicit permission to receive communications from an email marketer are flagged as unauthorized recipients.

Any messages sent to these addresses are classified as unsolicited and may result in the sender being reported to one or more blacklist sites.
Recycled Spam Traps . Email addresses that were once previously owned by a user but have since been abandoned or closed can later be reactivated and monitored.

These reactivated addresses, often referred to as recycled spam traps, are used to identify senders who continue to email inactive or unengaged recipients.

While primarily intended to identify and block spammers, they can also flag email marketers who fail to maintain clean and engaged contact lists, potentially impacting sender reputation and deliverability.
Additional information about our process and threats we scan for:
Leverage our wide-ranging, threat intelligence for a safe, deliverable email outreach.
Dedicated Honeypots and Contributing Moles

Removal of dedicated and collaborative antispam system traps or individuals...Learn More.

Honeypots . These are email addresses intentionally created and distributed across websites, forums, and other online spaces, designed to be harvested by spammers.

These decoy addresses, often maintained by anti-spam organizations, do not belong to real users and are used to monitor and identify spam activity.
Contributing Moles . This form of feeder email refers to collaborating recipient submissions, domain-level monitors, or individuals who actively contribute to anti-spam solutions.

While they may not have direct ownership of the resources involved, historical evidence often links them to blacklist sites, posing a risk to your sending reputation.
Parked Resources . Leverage our insights to avoid sending email traffic to millions of unused or parked website domains.

These domains are typically not configured for legitimate email use, and any emails sent to their recipients (e.g., catch-all or role-based accounts) are inherently invalid, increasing the likelihood of being flagged as spam.
Our expertise ensures your outreach avoids these forms of hidden traps.
Third-Party Oversight Seeds

Identification of highly litigious and collaborative antispam sinkholes and activists...Learn More.

These form of email addresses are often added to lists, sometimes without the sender's knowledge, and seeded across various locations online. These addresses may be hidden on websites or submitted through unsubscribe forms.
Our services specifically include the identification and removal of highly litigious and collaborative anti-spam activists, ensuring compliance and reducing potential risks to your organization.
Email Bounce Verification

Confirmation of email validity and verification of mail system acceptance...Learn More.

Recipient Verification . We provide confirmation that email addresses adhere to a valid format and verify their deliverability to the intended recipient in accordance with RFC standards.

Our email verification process is non-intrusive and ensures that each email address on your list is accurate, valid, deliverable, and ready to send. This helps you maintain the integrity of your email campaigns and improve overall deliverability rates.
Domain Validation . Our Domain Health Check performs comprehensive domain, email, and network performance tests to ensure all domains within your list are online and operating optimally.

This process verifies that receiving MTA’s server responds consistently and correctly, supporting seamless and reliable email delivery.
Boost your email deliverability and maintain a flawless sender reputation.
Typo and Fake Emails

Detection of popular typo domains repurposed as honeypots or traps...Learn More.

These are spam traps associated with domains intentionally designed to resemble common domain names, such as "yaaho.com" or "ynail.com."
Emails sent to these addresses are often flagged as unsolicited and may result in the sender being reported to one or more blacklist sites.
Ensuring accurate email address collection and validation is critical to avoid these traps and protect your sender reputation.
Email Blackhole and Catch-all Verification

Emails designed to be silently discarded, never being viewed by a human...Learn More.

Blackhole Verification . Certain email domains are configured to silently discard incoming messages—often referred to as "blackholes".

In these cases, the messages are dropped without notifying the sender, meaning they never reach the intended recipient and are never viewed by a real person.
Catch-All Detection . Catch-All or Accept-All email addresses are associated with domains configured to accept all emails sent to the domain, regardless of the validity of the recipient address.

While these addresses return a valid status during verification, it can be impossible to determine their true deliverability without sending an actual email.

Such configurations are often designed to protect legitimate users by initially accepting messages, only to silently discard them or send bounce notifications afterward.

Detecting these scenarios helps to refine email lists, improve deliverability rates, and avoid unnecessary bounce issues.
Detecting these scenarios helps to refine email lists, improve deliverability rates, and avoid unnecessary bounce issues.

Engage with your list producing high quality traffic.

Accept-All Verification

Industry’s only validation tool designed to assess risky and catch-all email addresses.

Go beyond standard SMTP checks and drive revenue growth by recovering risky leads that would otherwise be discarded.
Our system utilizes burner accounts to conduct comprehensive tests and validate these type of leads within 48–72 hours.
The diverse behaviors of catch-all or accept-all email servers present challenges including:
Varied Server Responses . Different servers handle verification requests uniquely, making it difficult to confirm the legitimacy of catch-all email addresses.

This inconsistency can lead to unreliable results and complicate email validation efforts.
Limited Verification Attempts . Many servers impose restrictions on the number of verification attempts allowed, which poses a challenge for bulk email verification.

Exceeding these limits can result in temporary blocks or incomplete validations.
Delayed Bounces . Catch-all servers often accept all incoming emails initially but later reject invalid or undesirable addresses.
Key risks impacting your email outreach and sender reputation:
Elevated Bounce Rates . Catch-all emails can lead to increased bounce rates, causing several issues:

Unexpected Bounces. These addresses accept all incoming messages, resulting in unpredictable bounce occurrences that harm sender reputation.

Mailbox Overload. Catch-all mailboxes often surpass storage limits, leading to additional email delivery failures.

Lower Engagement. Messages sent to catch-all addresses may not be checked, which leads to reduced engagement and response rates.
Exposure to Spam and Blacklisting . Catch-all emails can heighten the risk of spam and blacklisting issues:

Spam Traps. Certain catch-all addresses may be used as spam traps, damaging your sender score and reputation.

Blacklisting Risks. Continual delivery attempts to invalid addresses can result in blacklisting by Email Service Providers (ESPs), further harming your email deliverability.
Increased Security Risks . Catch-all emails may expose businesses to security vulnerabilities, such as phishing attacks, putting sensitive data and systems at risk of compromise.
Impressionwise ensures accuracy of your email campaigns, helping to optimize deliverability and engagement.

Dormant Accounts

Identification of Hotmail, AOL, Yahoo and Gmail internal anti-spam honeypots.

Our service includes detection of popular webmail honeypots from major providers such as Hotmail, AOL, MSN, Yahoo, Gmail, and other top email services. These honeypots are part of internal network defense systems designed to monitor engagement levels.
The number of these honeypots that marketers send to is a key metric that these providers use, alongside bounce rates and complaint levels, to determine whether your email will be delivered to the inbox or flagged as spam.
By identifying and avoiding these traps, we help ensure your emails have the best chance of reaching your recipients.

Habitual Protestor

Known companies and individuals recognized as consistent complainers.

These are individuals or entities widely recognized within the industry as "complainers" or "screamers." They have explicitly stated that they do not wish to receive any form of unsolicited commercial email from any source.
Engaging with these recipients can significantly harm your sender reputation, as they are highly likely to report unwanted emails, potentially leading to deliverability issues or blacklisting.

Group or Role Accounts

Detection of low engagement, system mailboxes that do not belong to an individual.

A role account is an email address associated with a specific office, position, group, or task, rather than an individual.
These accounts are typically used for general inquiries or departmental communication and can be categorized as either technical or non-technical.
Common examples include postmaster@, abuse@, sales@, support@, info@, legal@, and inquiries@.
Understanding and managing role accounts is crucial for maintaining effective engagement and email deliverability.

Threat Keys

Removal of ISP, system or non-human generated email monitoring addresses.

System-generated email addresses are randomly created using unique phrases or combinations of words, designed to appear distinct and bypass automated email filters.
These addresses are typically used to circumvent detection by spam filters.
To counter this, advanced filtering techniques are employed to detect and block offensive language, suspicious phrases, and unnatural email addresses, such as "1e49cs1pb6@company.com," ensuring a higher level of security and accuracy in email validation.

Disposable Email Accounts

Identification of purpose-built, disposable email addresses with minimal response expectation.

In some cases, an email user may need to provide their address to a website but lacks confidence that the site owner will not misuse it for sending unsolicited messages.
One solution to mitigate this risk is to use a disposable email address—an address that can be deactivated or abandoned after use, which forwards emails to the user’s real account.
Disposable email accounts enable users to complete sign-up and verification processes without exposing their primary email to potential spam, providing an added layer of privacy and protection.

Engage with your list producing high quality traffic.

Accept-All Verification

Industry’s only validation tool designed to assess risky and catch-all email addresses...Learn More.

Go beyond standard SMTP checks and drive revenue growth by recovering risky leads that would otherwise be discarded.
Our system utilizes burner accounts to conduct comprehensive tests and validate these type of leads within 48–72 hours.
The diverse behaviors of catch-all or accept-all email servers present challenges including:
Varied Server Responses . Different servers handle verification requests uniquely, making it difficult to confirm the legitimacy of catch-all email addresses.

This inconsistency can lead to unreliable results and complicate email validation efforts.
Limited Verification Attempts . Many servers impose restrictions on the number of verification attempts allowed, which poses a challenge for bulk email verification.

Exceeding these limits can result in temporary blocks or incomplete validations.
Delayed Bounces . Catch-all servers often accept all incoming emails initially but later reject invalid or undesirable addresses.
Key risks impacting your email outreach and sender reputation:
Elevated Bounce Rates . Catch-all emails can lead to increased bounce rates, causing several issues:

Unexpected Bounces. These addresses accept all incoming messages, resulting in unpredictable bounce occurrences that harm sender reputation.

Mailbox Overload. Catch-all mailboxes often surpass storage limits, leading to additional email delivery failures.

Lower Engagement. Messages sent to catch-all addresses may not be checked, which leads to reduced engagement and response rates.
Exposure to Spam and Blacklisting . Catch-all emails can heighten the risk of spam and blacklisting issues:

Spam Traps. Certain catch-all addresses may be used as spam traps, damaging your sender score and reputation.

Blacklisting Risks. Continual delivery attempts to invalid addresses can result in blacklisting by Email Service Providers (ESPs), further harming your email deliverability.
Increased Security Risks . Catch-all emails may expose businesses to security vulnerabilities, such as phishing attacks, putting sensitive data and systems at risk of compromise.
Impressionwise ensures accuracy of your email campaigns, helping to optimize deliverability and engagement.
Dormant Accounts

Identification of Hotmail, AOL, Yahoo and Gmail internal anti-spam honeypots...Learn More.

Our service includes detection of popular webmail honeypots from major providers such as Hotmail, AOL, MSN, Yahoo, Gmail, and other top email services. These honeypots are part of internal network defense systems designed to monitor engagement levels.
The number of these honeypots that marketers send to is a key metric that these providers use, alongside bounce rates and complaint levels, to determine whether your email will be delivered to the inbox or flagged as spam.
By identifying and avoiding these traps, we help ensure your emails have the best chance of reaching your recipients.
Habitual Protestors

Known companies and individuals recognized as consistent complainers...Learn More.

These are individuals or entities widely recognized within the industry as "complainers" or "screamers." They have explicitly stated that they do not wish to receive any form of unsolicited commercial email from any source.
Engaging with these recipients can significantly harm your sender reputation, as they are highly likely to report unwanted emails, potentially leading to deliverability issues or blacklisting.
Group or Role Accounts

Detection of low engagement, system mailboxes that do not belong to an individual...Learn More.

A role account is an email address associated with a specific office, position, group, or task, rather than an individual.
These accounts are typically used for general inquiries or departmental communication and can be categorized as either technical or non-technical.
Common examples include postmaster@, abuse@, sales@, support@, info@, legal@, and inquiries@.
Understanding and managing role accounts is crucial for maintaining effective engagement and email deliverability.
Threat Keys

Removal of ISP, system or non-human generated email monitoring addresses...Learn More.

System-generated email addresses are randomly created using unique phrases or combinations of words, designed to appear distinct and bypass automated email filters.
These addresses are typically used to circumvent detection by spam filters.
To counter this, advanced filtering techniques are employed to detect and block offensive language, suspicious phrases, and unnatural email addresses, such as "1e49cs1pb6@company.com," ensuring a higher level of security and accuracy in email validation.
Disposable Email Accounts

Identification of purpose-built, disposable email addresses with minimal response expectation...Learn More.

In some cases, an email user may need to provide their address to a website but lacks confidence that the site owner will not misuse it for sending unsolicited messages.
One solution to mitigate this risk is to use a disposable email address—an address that can be deactivated or abandoned after use, which forwards emails to the user’s real account.
Disposable email accounts enable users to complete sign-up and verification processes without exposing their primary email to potential spam, providing an added layer of privacy and protection.

Unrivaled, Actionable Insight

Tired of overly simplified reporting from other verification companies that provide minimal detail and zero insight into your list? Our industry-leading List Profile Report provides the most comprehensive view and insight into your data.

Detailed Diagnostics

Industry leading, detailed diagnostic codes to aid in the identification and resolution of specific deliverability threats

Comprehensive Reporting

Line-item reporting covering all forms of email reputation and deliverability threats, so you can send in confidence

Actionable Insight

Comprehensive data quality reporting and a decade of experience provides a unique view into your sending results

Stop wondering and start knowing if your emails are safe and sign up for our complimentary evaluation. No credit card required, zero obligations.

Unrivaled, Actionable Insight

Tired of overly simplified reporting from other verification companies that provide minimal detail and zero insight into your list? Our industry-leading List Profile Report provides the most comprehensive view and insight into your data.

Detailed Diagnostics

Industry leading, detailed diagnostic codes to aid in the identification and resolution of specific deliverability threats

Comprehensive Reporting

Line-item reporting covering all forms of email reputation and deliverability threats, so you can send in confidence

Actionable Insight

Comprehensive data quality reporting and a decade of experience provides a unique view into your sending results

bulk email scrubbing service

It's a matter of risk versus reward

0% of email delivery failures are caused by reputation problems, not to mention the possible downtime and opportunity costs associated with having a bad sender reputation.

The recognized authority in email verification and list cleaning services

Impressionwise makes it easy for potential clients to evaluate our list cleaning services by offering a complimentary scan and report for a sample set of your data to illustrate the benefits of our services.

Try it Now
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