BounceBlock vs Mailfloss
Mailfloss specializes in automatic, hands-off email cleaning that plugs into your ESP and removes bad addresses on a schedule. BounceBlock is more of an on-demand verifier that also validates phones — useful when you want control over each clean and a phone check too.
BounceBlock vs Mailfloss
| BounceBlock | Mailfloss | |
|---|---|---|
| Pricing model | Flat monthly | Subscription by list size |
| Phone validation | Included | Email-only |
| Email + phone bundled | ✓ | ✕ |
| No credit math | ✓ | — |
| Free tier | 100 / month | Free trial |
| Clean file in under 2 min | ✓ | ✓ |
Comparison based on publicly available information and may change — please verify current details on Mailfloss’s website.
Same job, fewer headaches
Phone validation too
Mailfloss auto-cleans email; BounceBlock validates phone numbers in the same workflow.
On-demand control
Verify exactly when you want — before a campaign or an import — with a preview and a quality score.
Flat pricing
A simple monthly plan that isn't tied to one ESP integration.
Clean leads in three steps
No setup, no integrations, no learning curve. Upload a file, download a better one.
Upload your CSV
Drag in any contact list. We auto-detect email, phone, name and company columns.
We verify everything
Every email checked for deliverability, every phone validated, duplicates flagged — with a live quality score.
Download clean leads
Export a verified, deduplicated list your team can actually call and email.
BounceBlock vs Mailfloss — FAQ
Is BounceBlock a Mailfloss alternative?
Yes — if you want on-demand cleaning with phone validation rather than only automatic ESP-integrated email cleaning.
Does it auto-clean my ESP?
Today it's a CSV round-trip plus a real-time API; scheduled ESP syncs are on the roadmap.
Free preview?
Yes — 100 rows free.
Stop wasting hours on dead leads.
Upload your list and see how clean it really is — free, in under two minutes.