Impressionwise Email Verification and Spam Trap Removal

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Free List Evaluation

Simple choices, Advanced results.
A clean email address is the first step toward engaging with your recipients.

We go far beyond
other services.
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.

Analyze Your List Now for Free

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

Dedicated Honeypots and
Contributing Moles

Removal of dedicated and collaborative antispam system traps or individuals

Oversight Seeds

Identification of highly litigious and collaborative antispam sinkholes and activists

Pristine Spam Traps. Email addresses that have never given permission to an email marketer to send to the address. Due to this, any messages sent to this address are immediately considered unsolicited, leading to its submission to one or more DNSBL sites.

Recycled Spam Traps. Email addresses that once belonged to a user but have since been abandoned or closed. They are then reactivated at a later date and monitored to see who is still emailing to that address. The idea behind these addresses is not only to catch spammers but also to catch email marketers sending to unengaged subscribers.

To learn more visit about our process and the threats we scan for:

Threat Intelligence Center
Understanding Blacklists
Domain Advisory Profiles
IP Advisory Profiles
Threat Level Guide

Honeypots. Email addresses created and spread across websites, forums etc., waiting to be scraped or harvested by spammers. Some organizations involved in fighting spam put specific email addresses on websites that do not belong to real users and are decoys set up to monitor, collect and catch spammers.

Contributing Moles. Collaborating recipient submission-based or domain-level, individual or anti-spam solution with no current, direct ownership of resources involved. Yet historical evidence firmly establishes a relationship to one or more DNSBL sites.

Parked Resources. This site intelligence gives you the leverage of avoiding sending email traffic to millions of unused and parked website domains. Since parked domains have previously not been configured for email use by the owner, any recipient is by definition, invalid and being spammed as they receive email in the form of a catch-all/role account. To know more.

Email addresses that are placed on a list, often secretly, that are created and seeded in various places online. Typically, they are hidden on websites or sometimes dropped into unsubscribe forms. Typically used for general monitoring of company's network resources used. Specifically, we provide removal of highly litigious and collaborative anti-spam activists.

Recipient Verification. Confirmation the email address has a valid format with verification of the deliverability of the email message to intended recipient as per RFC standards. Our email verification is a non-intrusive process that verifies whether a given list of email addresses are accurate, valid, deliverable and good-to-send.

Domain Validation. Our Domain Health Check will execute a number of domain/email/network performance tests to make sure for all the domains contained within your list, systems are online and performing optimally. This will ensure these systems have the proper communication and infrastructure to deliver an email address to the intended recipient, and that the receiving domain's server responds in a consistent and correct manner.

These are spam traps at domains that are very similar to common domain names, such as yaaho.com or ynail.com. Email messages sent to these addresses are potentially considered unsolicited, leading to its submission to one or more DNSBL sites.

Email Blackhole Verification. Email domains where incoming email messages are silently discarded (or "dropped"), without informing the sender that the message did not reach its intended recipient and never viewed by a real person.

Email Catch-all Detection. These email addresses with this designation always return a valid status, yet these addresses are commonly referred to as "Accept Alls or Catch-Alls" as they contain a domain-wide mail server setting that accepts every single email received. Due to this type of email configuration, without sending an actual email, it can be impossible to determine the validity of any email address checked as they all come back deliverable.

Typically, these domains are trying to protect their legitimate users by telling the sending mail server it will accept the mail for a given email address, but then silently discard the message or send a bounce message after the fact.

Email Bounce

Confirmation of email validity and verification of mail system acceptance

Typo and
Fake Emails

Detection of popular typo domains repurposed as honeypots or traps

Email Blackhole
and Catch-all Verification

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

Engage with your list producing
high quality traffic.

Non-Human Invalid Traffic
(Proxies/ Bots)

Protect against high-risk traffic, invalid traffic sources and guard against ad fraud

Dormant Accounts

Identification of Hotmail, AOL, Yahoo and Gmail internal, antispam honeypots.

Habitual Protestors

Known companies and individuals recognized as consistent complainers

Protect against high-risk traffic sources (bad actors) and guard against ad-fraud in the form of Non-Human Invalid Traffic (IVT). Our sophisticated machine learning algorithms identify traffic originating from botnets, data center traffic, click farms, proxies, malicious script injectors and hijacked devices. To know more.

Detection of popular webmail HAMYG (Hotmail, AOL, MSN, Yahoo, Gmail) and other top provider intelligence honeypots designed as an internal network defense system to detect level of engagement. The number of these seeds marketers send to becomes a metric these providers consider, alongside bounces and complaint rates, when making the determination to accept your email message to the inbox or not.

Known and industry recognized as complainers or screamers which have declared they do not wish to receive any form of unsolicited commercial email from any source.

A role account is an email address that is not associated with a specific person, but rather with an office, position, group or task. Role accounts can be broadly classified as either technical or nontechnical (i.e. postmaster@, abuse@, sales@, support@, info@, legal@, or inquiries@, etc.). To know more.

System-generated email addresses that are randomly generated phrases or words, aiming to make each look different and fool automated email filters. Additional detection techniques are applied in filtering of offensive words, phrases and non-natural email addresses like 1e49cs1pb6@company.com. To know more.

An email user may sometimes need to give an address to a site without complete assurance that the site owner will not use it for sending spam. One way to mitigate the risk is to provide a disposable email address — an address which the user can disable or abandon which forwards email to a real account. These disposable accounts will allow the visitor to sign up and verify his registration without exposing his primary email account to potential spam. To know more.

Group or Role Accounts

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

Threat Keys

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

Disposable Email Accounts

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

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.

check fake email

It's a matter of risk versus reward

83% 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

Experience the difference for yourself. Try our free list analysis!
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