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 and Honeypots. Traps are 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. Honeypots are 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.

Recycled Spam Traps and Moles. 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.

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 domains, 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. This includes all webmail email addresses such as Gmail and Yahoo.

Domain validation. Domains identified to be active with the presence of proper MX records and listening SMTP server, with additional classification of domain considered to be inactive, suspended or expired that has been used by a person in the past, and is no longer in active use.

Null MX/ domain black-hole 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.

Catch-all detection. Also known as accept-alls, these email address domains have a catch-all policy which accepts all email addresses so no errors will be returned when sending to an address that "doesn't exist."

Engage with your list

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.).

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

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.

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

114.9 billion

27.4 trillion

11.6 billion

Emails Processed Data Points Analyzed Threats Discovered

With an average of 117.554 new email-based threats found each month, 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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