More detailed verdicts
Eight verdicts, including catch-all, disposable, role and abuse, each with a reason code.
Flaxxa Mailcleaner vs Kickbox
Kickbox alternative: two email verification APIs, compared.
Kickbox is an email verification service whose API returns a result, a reason, flags and a Sendex quality score. Flaxxa Mailcleaner's API returns a verdict, a reason code and risk and confidence scores, and the app adds bulk list cleaning, scheduled re-checks and a domain audit.
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flaxxa.com / product / mailcleaner / features
Capabilities
Everything Mailcleaner ships with.
◉
Layered checks
◇
Risk and confidence
✦
Bulk list cleaning
⌬
Suppressions and re-checks
◐
Domain audit
▣
API and widget
The full feature list→ Start free
Side by side
Flaxxa Mailcleaner vs Kickbox, feature by feature.
What Kickbox lists on its own website beside what Flaxxa Mailcleaner does. Where their site doesn't say, the table says so.
At a glance
Flaxxa Mailcleaner wins outright on 2 of 9 capabilities.
Capability-by-capability below — judge for yourself.
| Capability |  | Kickbox |
|---|---|---|
| Verification API | ||
Single-address verification API | Yes | Yes |
Result categories | 8 verdicts with reason codes | 4 results with a reason |
Quality score | 0–100 risk and confidence | Sendex, 0 to 1 |
Accept-all (catch-all) flag | Yes | Yes |
Disposable and role flags | Yes | Yes |
Free email provider flag | Yes | Yes |
Typo suggestion | suggested_correction, or auto-fix | did_you_mean |
| Flaxxa Mailcleaner extras | ||
Batch API of up to 1,000 addressesadvantage | Yes | Not in the official Node library |
Part of a wider app workspaceadvantage | Yes | — |
01 / 02
Why choose Flaxxa Mailcleaner over Kickbox?
The same core signals, with more around them.
Lists and domains
Bulk cleaning in the app, scheduled re-checks and an SPF, DKIM and DMARC audit.
One workspace
Beside your other Flaxxa apps, on one credit balance.
02 / 02
Where might Kickbox be the better choice?
Kickbox is a dedicated verification company.
- A single Sendex score is simple to use as one send threshold.
- Official client libraries, such as Node and Ruby; Flaxxa Mailcleaner offers a REST API without SDKs.
- A specialist, if verification is all you need.
Other comparisons
Flaxxa Mailcleaner vs the rest of the category
Flaxxa Mailcleaner vs ZeroBounce
A ZeroBounce alternative: SMTP, catch-all, disposable and typo checks, risk and confidence scores, list cleaning and SPF/DKIM/DMARC audits.
Flaxxa Mailcleaner vs NeverBounce
A NeverBounce alternative with SMTP, catch-all, disposable and typo checks, 0–100 risk and confidence scores, a form widget and SPF/DKIM/DMARC audits.
Flaxxa Mailcleaner vs Bouncer
Flaxxa Mailcleaner vs Bouncer: SMTP, catch-all, disposable and typo checks, scores, form widgets, integrations, domain checks and how you pay.
FAQ
Flaxxa Mailcleaner vs Kickbox: common questions
Kickbox's API returns one of four results (deliverable, undeliverable, risky, unknown) with a reason, flags and a Sendex quality score from 0 to 1. Flaxxa Mailcleaner returns one of eight verdicts with a reason code and 0–100 risk and confidence scores.
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