ConvertKit Email Verification - Pay Only for Real Subscribers

You Are Paying ConvertKit
for Emails That Don't Exist.

ConvertKit bills by subscriber count. Every invalid address you keep inflates your tier and your invoice - while hurting deliverability scores on every broadcast. BounceZero removes them - $3 per 1,000 verifications.

Start Free - 100 Credits See Pricing

Works with ConvertKit (Kit) all plans $3/1,000 verifications Can reduce your ConvertKit tier cost

Backed by & listed on

Listed

AWS

Activate

Google

for Startups

NVIDIA

Inception

MongoDB

Atlas

Datadog

Startup Program

UK Ltd Co.

No. 17153835

Listed

AWS

Activate

Google

for Startups

NVIDIA

Inception

MongoDB

Atlas

Datadog

Startup Program

UK Ltd Co.

No. 17153835

How to Verify Your ConvertKit Subscribers

Export from ConvertKit

Subscribers > filter your list or tag > Export. Download the CSV with email and name fields.

Upload to BounceZero

Create a free account and upload your CSV in the Bulk Verification section. BounceZero auto-detects the email column.

Run 5-stage verification

Syntax, DNS/MX, live SMTP mailbox, provider intelligence, and ML scoring. 65+ signals per address.

Download clean results

Filter to Deliverable for your safe-to-send list. Invalid and Disposable addresses flagged separately.

Remove invalids from ConvertKit

In ConvertKit, bulk-unsubscribe or delete the invalid contacts. Removing them from your subscriber count can drop you to a lower billing tier.

New to verification? Start with the complete email verification guide.

Frequently Asked Questions

Why verify my ConvertKit list?

ConvertKit bills by subscriber count and tracks bounce rates per broadcast. Invalid subscribers inflate your bill and hurt deliverability. Remove them to save money and protect your sender score.

How do I export a ConvertKit list?

Subscribers > filter by list or tag > Export. Download the CSV and upload to BounceZero bulk verification.

Does BounceZero connect to ConvertKit?

Via Zapier or REST API - verify new subscribers on opt-in or batch-verify existing lists via CSV before each broadcast.

Can verifying reduce my ConvertKit bill?

Yes. Removing 10-20% invalid subscribers from a 10,000-contact list can drop you to a lower billing tier, saving £10-£50/month - more than the verification cost.

Pay ConvertKit Only for Real Subscribers.

100 free verifications. $3/1K after that. Clean your list and lower your bill.

Start Free How Bulk Works

Verify lists from your ESP or platform

Works with every major email platform - export, verify, reimport

GetResponse verification

Maintain list health inside GetResponse automations

SendGrid verification

Protect SendGrid reputation - avoid suspension

Mailjet verification

Protect Mailjet sender score and deliverability

Email Verification Constant Contact

Verify your Constant Contact email list before every campaign

Campaign Monitor verification

Protect your Campaign Monitor account health

WooCommerce verification

Clean customer emails from your WooCommerce store

Continue through related topics

Integration guides API documentation Bulk email validation

Follow BounceZero

You Are Paying ConvertKit for Emails That Don't Exist.