Validate and clean email lists to prevent costly bounces
High bounce rates trigger ISP spam filters and degrade your domain reputation. MailProbe verifies recipient validity in real time via API or bulk audience uploads.
What is Mailofly MailProbe Email List Cleaning?
Mailofly MailProbe is an automated list verification service that validates recipient syntax, executes live destination MX probing, detects disposable/throwaway inboxes, and filters spam traps before sending, keeping domain bounce rates strictly under 1%.
Target bounce rate
Syntax & MX verification
Reputation protection
Technical Parameters & Standards
REST API Endpoint & Bulk CSV Audience Upload
RFC Syntax, Domain MX Records, SMTP Handshake, Disposable Lists
Known spam traps, role-based emails (admin@, support@)
Sub-180ms per individual address check
Engineered for developer velocity
Syntax & RFC compliance
Catches typos, formatting errors, and invalid domain structures before an email is ever dispatched.
Live MX & mailbox probing
Checks destination mail server DNS and confirms receiving mailboxes exist without sending unwanted ping messages.
Disposable & spam-trap filtering
Automatically detects throwaway addresses, role-based inboxes (admin@, support@), and known spam traps.
How it works
Upload list or call API
Import a CSV audience file or validate recipient addresses inline before sending via our REST API.
Automated verification checks
MailProbe runs multi-layer checks: syntax, MX records, SMTP handshake verification, and disposable domain lists.
Dispatch with confidence
Exclude undeliverable contacts automatically and send to verified recipients with rock-solid inbox placement.
Frequently Asked Questions
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Automated reputation defense engine that monitors bounce rates, complaint velocity, and suspicious patterns to instantly suppress toxic addresses and isolate bad actors before damage occurs.
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