mailfloss
★★★★★ 4.9 · 13 Reviews
What is mailfloss?
Automatically Remove Hard Bounces, Fakes, and Misspelled Emails From Your Email Lists. Connect your email service provider and mailfloss automatically removes invalid email addresses so the emails you send get in front of more ideal customers. maifloss works for you and removes fake emails before they become a problem. When you connect mailfloss to your favourite email service provider, we scan for invalid email addresses and remove them every single day, increasing your email deliverability and getting more of your emails into the priority inbox.
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mailfloss Reviews (13)
- ★★★★★12
- ★★★★★1
- ★★★★★0
- ★★★★★0
- ★★★★★0
Review Summary
Generated using AI from real user reviews
Mailfloss is a straightforward email validation tool that users consistently praise for simplicity and seamless integrations.
The overwhelming strength is how easily it connects to major platforms like Klaviyo, ConvertKit, and ActiveCampaign—several reviewers highlight that automation works without manual export/import steps. Users also value its core function: cleaning email lists by catching invalid, fake, and spam addresses that slip through sign-up forms, particularly useful for e-commerce sites dealing with fraudulent opt-ins. Setup is described as hassle-free and the service runs reliably on autopilot once configured.
One reviewer noted they couldn't yet rate it five stars because they were still on the free trial, though they expressed strong intent to recommend it. Another gave 9/10 after a year of use, suggesting minor room for improvement that wasn't specified. Most reviews were brief endorsements rather than detailed accounts, so criticisms beyond these minor reservations are absent from the feedback.
★★★★★
Monday, October 13, 2025
“Probably the easiest email scrubbing tool I've used to date.…”
Probably the easiest email scrubbing tool I've used to date. Easy to connect and setup.
★★★★★
Thursday, September 15, 2022
“Hard to find a good cleaning email service. I love…”
Hard to find a good cleaning email service. I love this one, special for the integration part!
★★★★★
Sunday, July 11, 2021
“I have been using Mailfloss to both automatically and manually…”
I have been using Mailfloss to both automatically and manually help ensure our email list stays spam-free for over a year. It is hassle-free and does what its supposed to. 9/10
★★★★★
Sunday, July 4, 2021
“SIMPLE. EFFICIENT!! I could not give the 5* yet because…”
SIMPLE. EFFICIENT!! I could not give the 5* yet because am still on the free trial (first hour!!) but I super like it already...that I would definitely recommend MAILFLOSS to anyone and everyone who deals with email marketing especially!
★★★★★
Monday, June 28, 2021
“I love this service, great future, Thanks so much”
I love this service, great future, Thanks so much
★★★★★
Friday, February 19, 2021
“Probably one of the best email verification system out there.…”
Probably one of the best email verification system out there. I tried 5 different ones!
★★★★★
Thursday, December 10, 2020
“Set it and Forget it" for REAL automation! Not kidding…”
Set it and Forget it" for REAL automation! Not kidding about "Set it and Forget it". There integration with Klaviyo is truly automated. No need to export / import.
★★★★★
Monday, May 4, 2020
“Helpful Tool to Clean Up Your Email List — really…”
Helpful Tool to Clean Up Your Email List — really easy integration with ConvertKit means that I can manage and clean-up my email list in a snap.
★★★★★
Monday, May 4, 2020
“When a pay-per-click advertising campaign resulted in a large number…”
When a pay-per-click advertising campaign resulted in a large number of opt-in leads with fake email addresses, unopened messages, and some bounces, I needed to do something about it. After research, I found mailfloss to be a fast and easy automated email validation solution that protects small businesses from sending invalid and fake emails. So you can maximize delivery of your email messages to your opt-in list.
★★★★★
Sunday, March 22, 2020
“It’s absolutely brilliant mailfloss detects spam emails. This is tremendous,…”
It’s absolutely brilliant mailfloss detects spam emails. This is tremendous, really. Great thinking! Most other services don’t do this. And E-commerce shops that use Klaviyo and similar services, honestly, are overrun by these darn addresses. They’re always signing up to post to the stores blogs, I suspect. All in all, this flossing is a marvelous concept.
