Product review

Mailfloss

Automatic email list cleaning inside your ESP

Visit Website

What is

Mailfloss

Mailfloss connects to your email platform and keeps the list clean on autopilot. It blocks bot, fake and disposable signups as they arrive, fixes common address typos, runs a daily cleanup of new subscribers and periodically rechecks the whole list for decayed addresses. Marketing teams use it to cut bounces and protect sender reputation.

02 — Who it’s for

Ideal Customer Profile

Built for email marketers and list owners at small and growing businesses, with API and bulk options that also suit larger teams and developers.

03 — Capabilities

Key Features

Real time signup verification

Typo detection and correction

Daily automatic list cleanup

Scheduled list decay protection

CSV upload and bulk verification

Verification API and webhooks

Google Sheets and Airtable add-ons

05 — Similar tools

Alternatives

ZeroBounce

Email validation and deliverability toolkit

NeverBounce

Email verification and list cleaning

Kickbox

Email verification for cleaner, deliverable lists

Bouncer

Email verification and deliverability

Emailable

Email verification and list cleaning platform

MillionVerifier

Bulk and real-time email verification

06 — FAQ

Frequently Asked Questions

What is Mailfloss used for?

Mailfloss verifies and cleans email lists automatically, removing invalid, fake and decayed addresses and fixing typos so more emails reach the inbox.

Which email platforms does Mailfloss work with?

It offers one click connections to about 40 email platforms, including Mailchimp, Klaviyo, HubSpot and ActiveCampaign, plus Zapier for other tools.

Can I verify a list without connecting my email platform?

Yes. You can upload a CSV, paste addresses into the dashboard, or verify inside Google Sheets and Airtable.

Does Mailfloss have an API?

Yes. It offers a REST verification API with single and bulk endpoints, webhooks and a JavaScript widget for signup forms.