Kickbox

Kickbox checks whether email addresses are valid before you send to them.

Updated April 2026

DeliverabilityData SourcesSales Tools

Overview: What is Kickbox?

It lowers bounce rates and safeguards your sender reputation. The platform processes lists in bulk or validates addresses in real time through an API.

Kickbox is an email verification service focused on list hygiene and deliverability. It scans your database to flag deliverable, risky, and undeliverable addresses so you can remove the bad ones before launching a campaign. The tool catches typos, disposable domains, and fake signups that would otherwise hurt your metrics. A real-time API lets you validate addresses at the point of entry on web forms. It connects with common CRMs and marketing platforms to keep data clean across your stack. The product does not send emails itself. It exists solely to improve the health and quality of your contact lists.

Fit: Ideal customer profile.

Growth and marketing teams at startups and mid-market companies who rely on cold email and need consistently low bounce rates.

Seed
SMB
Mid-market

Capabilities

Key features.

Bulk email list verification

Real-time verification API

Typo and fake email detection

Sender reputation protection

Deliverability consulting and audits

CRM and marketing platform integrations

GDPR compliant and SOC II certified

Multiple verification methods

Volume discounts for large lists

Unknown results provided at no cost

Usage

How to use Kickbox.

Upload a contact list for bulk verification or connect the API to check addresses as they enter your system. Remove the flagged undeliverable and risky addresses before running your next outreach sequence. Reverify stale lists on a regular cadence to maintain low bounce rates over time.

Cost

Pricing.

$5/ Per credit

Free tier includes 100 verifications. Paid plans start at $5 for 500 credits and scale to $4,000 for one million verifications.

Free

$0.00

100 verifications
unknown results free
first class support
GDPR compliant
SOC II certified
volume discounts

Basic

$5.00

500 verifications
$$5 price tier
unknown results free
first class support
GDPR compliant
volume discounts

Standard

$10.00

1,000 verifications
$$10 price tier
unknown results free
first class support
GDPR compliant
volume discounts

Growth

$25.00

2,500 verifications
$$25 price tier
unknown results free
first class support
GDPR compliant
volume discounts

Plus

$40.00

5,000 verifications
$$40 price tier
unknown results free
first class support
GDPR compliant
volume discounts

Pro

$80.00

10,000 verifications
$$80 price tier
unknown results free
first class support
GDPR compliant
volume discounts

Premium

$200.00

25,000 verifications
$$200 price tier
unknown results free
first class support
GDPR compliant
volume discounts

Enterprise Small

$400.00

50,000 verifications
$$400 price tier
unknown results free
first class support
GDPR compliant
volume discounts

Enterprise Medium

$800.00

100,000 verifications
$$800 price tier
unknown results free
first class support
GDPR compliant
volume discounts

Enterprise Large

$1500.00

250,000 verifications
$$1,500 price tier
unknown results free
first class support
GDPR compliant
volume discounts

Enterprise X-Large

$2500.00

500,000 verifications
$$2,500 price tier
unknown results free
first class support
GDPR compliant
volume discounts

Enterprise XX-Large

$4000.00

1,000,000 verifications
$$4,000 price tier
unknown results free
first class support
GDPR compliant
volume discounts

At a glance

Quick facts.

Stack position: Deliverability
Category: Data Sources, Sales Tools
Best for: Seed, SMB, Mid-market
Pricing: From $5/Per credit

Subcategories

Data Validation & Verification
Email Verification

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Questions

Frequently asked.

How do you use Kickbox?

Upload a list for bulk verification or plug in the API to validate emails as they arrive. Both methods help you remove bad addresses before sending.

What does Kickbox cost?

The first 100 verifications are free. Paid tiers range from $5 for 500 credits up to $4,000 for one million credits, with volume discounts available.

Why pick Kickbox over alternatives?

It combines high accuracy with GDPR compliance and responsive support. Broad integration options also make it easy to fit into existing workflows.

How does Kickbox verify an email address?

The service checks syntax, domain validity, and mailbox existence to sort addresses into deliverable, risky, or undeliverable buckets. This protects your sender score and reduces bounces.

Is there a free Kickbox plan?

Yes. You get 100 free verifications when you sign up. This lets you test the platform before committing to a paid tier.

Does Kickbox offer partner or agency programs?

It works with agencies, enterprises, developers, and non-profits to improve email deliverability. Reach out to the team for partnership details.

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