mailfloss vs Clearout.
Both clean email lists. mailfloss is built for marketers who want set-and-forget cleanup inside their email platform. Clearout is built around bulk and real-time email verification plus an email finder for prospecting. Here is how to choose.
Should you choose mailfloss or Clearout?
mailfloss and Clearout both verify email, but optimize for different jobs. Choose mailfloss for hands-off, ongoing cleanup, typo fixing, and real-time verification wired into your ESP. Choose Clearout if you also need prospecting tools like an email finder and mainly run one-off bulk verification yourself.
Pick the one built for how you actually work.
Pick mailfloss if…
- You’re on Mailchimp, Klaviyo, HubSpot, ActiveCampaign, or similar
- You want it to run automatically — not on every campaign manually
- You want typos fixed, not just deleted
- You want decay protection on your existing list
Pick Clearout if…
- You need one-off verification outside your email platform and are comfortable managing cleanup manually
- You are comfortable managing verification results outside your email platform
- You only need checks when a file, form, or API call is submitted
- You do not need typo recovery and scheduled list decay protection in one workflow
Side by side.
A fair side-by-side of mailfloss and Clearout, focused on workflow fit instead of only raw verification checks.
Honest reasons to pick Clearout.
We are not the right tool for every job. If any of these sound like you, Clearout may be the better pick.
You buy lists or work with one-off uploads
If your workflow is “download a CSV, verify it, send a campaign,” Kickbox’s pay-as-you-go bulk pricing is straightforward and competitive at volume.
Your work is one-off bulk verification
You’ve got a 500k-row CSV from a recent lead-gen push and you just need it cleaned once. Kickbox’s bulk pricing is competitive and you don’t need ongoing automation.
You don’t use an email platform (or you use an unusual one)
mailfloss’s biggest superpower is its deep, one-click integration with email platforms. If your sending platform isn’t one we support, Kickbox’s API may suit you better.
Where mailfloss beats Clearout - by design.
If you are a marketer using Mailchimp, Klaviyo, HubSpot, ActiveCampaign, or another supported email platform, this is where you will feel the difference.
Typo Fixer keeps subscribers other tools delete
When [email protected] arrives, Clearout marks it invalid. mailfloss fixes it to [email protected] and keeps the subscriber on your list. Across a year, that’s real revenue.
It runs on autopilot — not when you remember
Clearout cleans the list when you upload it. mailfloss connects to your email platform once and cleans daily, forever. Most marketers forget to run a verifier every month. mailfloss doesn’t.
Decay Protection catches addresses that rot
Subscribers from 3 years ago go bad on their own. mailfloss re-verifies your existing list on a schedule. Clearout makes you re-upload it.
No CSV gymnastics
With Clearout you export your list, upload, wait, download the results, re-import into your email platform. With mailfloss it’s all happening inside your email platform, automatically. Zero export/import.
Customer-friendly pricing
mailfloss has a money-back guarantee. Clearout doesn’t. If you don’t love it within 7 days, you don’t pay.
No-code for marketers — and a real API for developers
mailfloss is no-code: connect your email platform and it runs. But developers aren’t an afterthought — a modern v1 REST API (bearer-token auth, real-time and bulk verification, and webhooks) exposes the same engine to your code. Most verifiers hand you an API and leave the ongoing cleanup workflow for you to build; with mailfloss you get both.
“We enjoy having amazing clean email data every day and a fantastic sender reputation. No blacklists, all time low email bounce rate. We have tried other email verifiers. But nothing comes close to mailfloss.”
For 25,000 monthly verifications:
Here’s what changes.
Most teams move over in an afternoon. No data export. No mapping spreadsheets.
Connect your email platform
One click into Mailchimp, Klaviyo, HubSpot, or ActiveCampaign. mailfloss reads your audience and starts the trial — nothing to import.
Turn on the features you used in Clearout
Bulk cleanup → Autofloss. Real-time check → Instafloss. Their list-review queue → our auto-actions panel. Most settings translate directly.
Cancel your Clearout subscription
When you’re happy, cancel Clearout. We won’t pressure you — if mailfloss doesn’t fit, our money-back guarantee covers you.