Bulk Email Verification
On Autopilot

Say Goodbye to Bounces, Typos, and Fake Emails Without Lifting a Finger

Why mailfloss? So you can focus on your business, instead of worrying about invalid emails

Email verification is one of the single best ways to improve your email deliverability, which means more ROI for your email marketing.

The problem with email verification is that it is a slow, manual, painful process that most marketers don’t enjoy. That’s where mailfloss comes in - we automate email verification and take out the manual processing and removal of bad and invalid emails. Your email lists never go sour with mailfloss.

How It Works

Connect Your Email Service Provider

With just a few button clicks, your ESP will be connected and mailfloss will begin scanning and cleaning your email lists. We support MailChimp, Campaign Monitor, Constant Contact, Ontraport, ConvertKit, Aweber, and Active Campaign, with more on the way!

Sit Back and Watch mailfloss Work

Everyday, mailfloss will automatically clean your email lists to maximize email deliverability and reduce bounce rates. You don’t have to do anymore tedious manual list cleanup so you can focus on more important things, like running your business and increasing your marketing ROI.

Check Your Analytics... Or Not

Customize what gets automated, whether to delete or unsubscribe your contacts, add whitelists and blacklists, or check your analytics. It’s really up to you! The bottom line is the hard work is done for you. It’s totally hands off. No more remembering to upload your csv files and paying exorbitant fees.

What our customers are saying

We were looking for an email validation service that could support enterprise level volume and tight integration with HubSpot, and frankly mailfloss was the only game in town.

Brandon Mcdonald
Brandon McDonald Director, Demand Generation Randstad USA

mailfloss is awesome. It's crazy accurate and super easy to use. You just set it and forget it. I'm a huge fan!

Danavir S, CopyMonk
Danavir Sarria Founder CopyMonk

I love mailfloss. I'm comfortable knowing that my email is being ... flossed... and I can send out to a clean list! Really, fantastic idea and I'm glad I found this service.

Marc S
Marc Sylvester Owner Laughingbird Software

mailfloss is literally the only piece of software that I use every single month that I don't even have to think about and I love that, because it's totally set and forget it.

I started using mailfloss on one of my lists and to my pleasant surprise open rates increased on average by 4%! The ease of use is awesome, just set it up and forget it!

Fred Owen
Fred Owen Owner Win with Fred

As soon as I started to floss my emails each day my domain and IP address reputation in Google Postmaster tools quickly started to climb back to high once again.

mailfloss is easy to use. They have great pricing options depending on how you plan to use the product. Overall great experience!

Dalton Kane
Dalton Kane Founder Saas Bootcamp

Setup in 60 seconds. Then never worry about email verification ever again.

we currently support MailChimp, Ontraport, Constant Contact, HubSpot, Campaign Monitor, AWeber, Infusionsoft, ActiveCampaign, ConvertKit, Drip, Sendlane, Klaviyo, Sendinblue, MailerLite, Moosend