Features

Purelist is an email list cleaning and hygiene service designed to remove invalid, risky, and non-deliverable email addresses before you send. Our process goes beyond basic validation by identifying duplicates, role accounts, spam traps, disposable emails, and known complaint sources that directly impact deliverability and sender reputation.

Every list is processed securely in real time, with detailed results and reports stored in your dedicated Purelist account so you can document exactly what was removed — and why.

Below is a step-by-step breakdown of the email list cleaning and scrubbing process Purelist uses to protect deliverability and reduce send risk.

• 1Duplicate removal and syntax validation — We eliminate duplicate records, malformed addresses, and syntax errors that cannot be delivered by any email system.
• 2Role-based email filtering — We remove role accounts such as sales@, support@, and info@, which are frequently associated with low engagement and higher complaint rates.
• 3Keyword-based risk scrubbing — Addresses containing high-risk keywords such as spam, abuse, or junk are flagged and removed to reduce the likelihood of complaints and filtering.
• 4Hard bounce suppression — Your list is compared against a database of over 100 million known hard bounces, including addresses that previously failed delivery, issued challenge responses, or requested removal.
• 5Complaint and blacklist screening — We remove addresses associated with known complaint activity and major reporting networks, including SpamCop, to protect sender reputation.
• 6Domain-level threat detection — We identify and remove addresses tied to spam traps, bots, honeypots, blacklisted domains, and known bogus domain sources using a continuously maintained domain intelligence database.
• 7Disposable and temporary email removal — Temporary, throwaway, and junk-collector email addresses are removed to prevent one-time signups and low-quality list entries from degrading engagement.