mailfloss

Review of mailfloss Software: system overview, features, price and cost information. Get free demos and compare to similar programs.

Overview

About mailfloss

mailfloss is a cloud-based solution that helps businesses of all sizes automatically scan and remove invalid and fake email addresses from email lists. It offers a decay protection module, which enables employees to prevent outdated email addresses, ensuring protection of domain reputation. Features of mailfloss include syntax check, disposable email detection, tagging, reporting, mail server validation, single email verification, spam detection and more. The platform lets sales and marketing teams add various keywords in the blacklist segment to avoid inclusion in emails. Additionally, administrators can use the platform to automate workflows by setting verification preferences to unsubscribe or delete email addresses. mailfloss provides an application programming interface (API) and Zapier integration, which lets businesses connect with several third-party platforms such as MailChimp, Constant Contact, Ontraport, Campaign Monitor, HubSpot and more. Pricing is available on monthly subscriptions and support is extended via phone, email and other online measures.

mailfloss Screenshots

mailfloss Features

Features of mailfloss
Bulk Email Verification
Disposable Email Detection
Domain Check
Single Email Verification
Spam Detection
Syntax Check
API
Catch-all Server Detection
Contact Management
Data Verification

mailfloss Integrations

MailerLite logo
MailerLite
Brevo logo
Brevo
HubSpot Marketing Hub logo
HubSpot Marketing Hub
Drip logo
Drip
Sendlane logo
Sendlane
Campaign Monitor by Marigold logo
Campaign Monitor by Marigold

Customer Reviews

See why people love mailfloss

5 Star
90%
4 Star
10%
3 Star
0%
2 Star
0%
1 Star
0%
Chris E.

Chris E.

Verified User

Information Technology and Services · 1001-5000 employees

Used monthly for less than 2 years
Dec 22, 2025

One of those services that gets it done in the background

With limited resources this is a great option to improve email deliverability.

What they liked
  • Easy to setup
  • I like how email checking is put on autopilot after the initial setup
Room for improvement
  • It's simple but there a lot of additional options, as well, that can be intimidating
  • Luckily there are lots of tooltips and their help widget has tutorials and video walk-thrus

Josh O.

Verified User

Computer Software · 2-10 employees

Used daily for more than 2 years
Dec 22, 2025

Does the complex work of email hygiene clean up daily live

It just works, and support is awesome. Great documentation

What they liked
  • set up is 15 min
  • and no surprises it works like expected
Room for improvement
  • Nothing they keep improving it
  • Soon live API will be available
Why they chose it

"Integration out of the box."

Tanya B.

Verified User

Health, Wellness and Fitness · 11-50 employees

Used daily for less than 6 months
Dec 22, 2025

Simple and easy integration

Verified reviewer

What they liked
  • Took me a day to compare different providers, and about 10 minutes to test out Mailfloss with the free trial
  • Started the paid package next day, and its functioning well so far
  • Direct integration with our (several) ESP, and daily cleaning for 17€, pretty decent
  • The CS responds nearly immediately
Room for improvement
  • Not too much to mention here, will circle again in a few months

Nick J.

Verified User

E-Learning · 2-10 employees

Used daily for less than 12 months
Dec 22, 2025

Auto-mazing software to keep your email marketing data sparkling clean

We enjoy having amazing clean email data every day. This means our email sending CRM has a fantastic email marketing reputation. No blacklists, all time low email bounce rate. Super High email deliverability, opens and clicks... and Earnings Per Click. We have tried other email verification services. But nothing has come close to MailFloss.

What they liked
  • MailFloss is producing accurate results and is super easy to both set up and maintain
  • In fact unless we have to manually import a new list of prospects into our CRM from a third party everything is fully automated and emails me a confirmation message every day
  • Its stress free
  • :-)
Room for improvement
  • Like all new software, you need to give it the time to learn how to use it
  • It took perhaps 1-2 hours
  • The pain was well worth the reward later
Switched From

the ease of the AutoFloss Automation with our CRM... and the amazing customer support.

Why they chose it

"it was a false economy to go with anyone else. When you have found the right product, at the right price, that has the right customer service... what else could you possibly be still looking for? MailFloss ticked all the right boxes then... and it still does almost 12 months on. We've VERY happy."

Doug L.

Verified User

Arts and Crafts · 2-10 employees

Used daily for less than 2 years
Dec 22, 2025

Works Seemlessly In The Background

Very Good. Response time when I have questions is fast and effective, which is always a good thing. It gives me a good feeling that the product is well supported and that customers are appreciated.

What they liked

Once I configure the features, the app works seemlessly in the back ground to keep my email list nice and clean

Room for improvement
  • Unless I missed it, it would be nice to have a preview button to see a list of emails that would get scrubbed/deleted before I actually commit to saying yes
  • I say this because I initially configured some setting too aggressively and ended up getting rid of some good subscribers that I recognized

Mesa W.

Verified User

Media Production · 201-500 employees

Used daily for more than 2 years
May 28, 2026

Can't say enough good things about mailfloss!

Mailfloss hums along seamlessly in the background to keep our high-volume email database clean and tidy and deliverability woes at bay. The most remarkable thing about mailfloss, though, is that we've used it with 3-different high-powered email platforms and every time we migrate, their founder personally sees to it that the new integration is set up properly and we are in good shape for a massive contact transfer and extra flossing that comes with that. We are in such capable hands with mailfloss!

What they liked
  • - amazing customer service - easy to use - set-and-forget
Room for improvement

I don't have any complaints -- and if I did, I know I could take them to the mailfloss team and they'd be addressed asap

Christopher S.

Verified User

E-Learning · 2-10 employees

Used daily for less than 2 years
May 28, 2026

Easy and effective

I've been very happy with Mailfloss. Its functionality, ease-of-use and pricing are all terrific.

What they liked
  • Mailfloss has great Infusionsoft integration, with flexible options including unsubscribing and/or tagging bad contacts, and daily cleaning of new contacts
  • No 3rd party service like Zapier required
Room for improvement

It would be great if there was some alerting mechanism if the number of cleaned contacts changed substantially week-to-week

James B.

Verified User

Marketing and Advertising · 51-200 employees

Used daily for less than 2 years
May 28, 2026

Customer service is King.

Excellent. Super responsive, helpful, professional company. Whatever you need there the to help. Not 48 hours later. You're not getting an automated response and a generic answer 3 days later. You're getting an extremely helpfull person right away ready to help you even if it's just to help you understanding something.

What they liked
  • If you ever have an issue sometimes they on it before you can even ask about it
  • There is no lack of help here
Room for improvement

Have been small bumps but the platform has been altered along the way to accommodate

Why they chose it

"Function and customer service."

Allen B.

Verified User

Mechanical or Industrial Engineering · 1001-5000 employees

Used daily for less than 2 years
May 28, 2026

Happy Camper

Mailfloss makes what was once a time-consuming process much easier. I recommend it to anybody who does e-mail marketing for their business.

What they liked
  • Integration with our mail provider
  • Automatic removal of bad e-mails
  • Fast Support
Room for improvement

It wasn't clear to me that I could close my browser tab when cleaning started; I think this could be improved

Alexander K.

Verified User

Financial Services · 2-10 employees

Used weekly for less than 12 months
May 28, 2026

Mailfloss gets to the places other cleaners miss

We have huge databases that we constantly turnover and Mailfloss solves the problem of getting banned by email service providers - we have saved so much time and money by running everything though mailfloss.

What they liked
  • Ease of use - we use manual cleaning for now and it's easy to upload files and get results
  • We love the way the results are stored and the ranking that mailfloss gives the email
Room for improvement
  • The speed - it would be epic if you could make it faster
  • Drag and drop uploading files would be ideal
  • The rankings of the emails could be simpler

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Decision Context

mailfloss

mailfloss

4.9
Pricing
Starting at $17.00 per month
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