Impressionwise Email Verification and Spam Trap Removal


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 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.

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.

Third party oversight seeds. 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.

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

Verify email deliverability

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 safe-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.

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.

Engage with your list

Proxies/ Bots. 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

Dormant accounts. 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.

Habitual protestors. 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.

Role accounts. 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.

Threat strings. 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 To know more.

Disposable email accounts. 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.

Social presence. We cross check social media channels to ensure your emails are in use for greater accuracy.

A Powerful Solution

Impressionwise was built to increase deliverability resulting in an expanded delivery footprint with increased inbox placement while protecting the sending domains and IP’s used.

Easy Setup, No Installation

Impressionwise runs directly in your browser so you don't need to install anything on your computer. Getting started is easy and no technical skills are required.

Simply, Automated, Flexibility

Our system provides real-time and batch cleansing of email addresses in bulk as a pre-send verification service or seamless integration as a point of collection API feed or favorite ESP integration

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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