Keep your contact list clean and deliverable
Track email opens, detect bounces automatically and let recipients unsubscribe with one click — all serverless, all at scale.
Get startedFeatures
Everything you need to maintain a healthy list
Address Checker handles the full lifecycle of an email address so you can focus on sending great campaigns.
Email Verification
Register any email address and get a unique tracking hash. Detect whether it's reachable before sending your campaigns.
Bounce Detection
Automatically scan your inbox for bounce messages and mark affected addresses. Keep your sender reputation intact.
Open Tracking
A 1×1 pixel silently confirms when a recipient opens your email. No extra library required — just inject the tracking URL.
Unsubscribe Management
Every email gets a personal unsubscribe link. Confirmed opt-outs are flagged instantly so you never send to them again.
Simple REST API
Six clean endpoints cover every operation. Integrate with your existing email platform, CRM or data pipeline in minutes.
Multi-account Sending
Rotate across multiple SMTP accounts automatically. When one reaches its daily limit, the next takes over seamlessly.
Process
From raw list to clean database in four steps
Address Checker slots into your existing workflow. No infrastructure to manage, no lock-in.
Register
Import your contact list via the API or the bulk registration CLI tool. Each email gets a unique SHA-256 hash stored in DynamoDB.
Send
The sender worker picks the next available address, injects the tracking pixel and unsubscribe link, then dispatches via your SMTP accounts.
Track
When the pixel loads, the address status flips to opened. Bounce monitor scans replies and marks hard bounces automatically.
Clean
Export a filtered CSV of valid, opened or bounced addresses. Feed the clean list back into your CRM or email marketing platform.
Who it's for
Built for marketing professionals
Whether you manage campaigns, own a CRM or run outreach at scale, Address Checker gives you the data you need.
Email Campaign Manager
Validate and clean your lists before every send. Reduce bounce rates, protect your domain reputation and improve deliverability metrics.
CRM Administrator
Keep your contact database fresh. Automatically flag stale addresses, hard bounces and unsubscribes so your CRM stays accurate.
Growth & Outreach Teams
Running cold outreach at scale? Rotate multiple sending accounts and confirm which addresses are active before investing in personalisation.
Marketing Operations
Integrate the REST API directly into your data pipelines. Export clean CSVs on demand and feed them into any downstream tool.
Ready to clean your contact list?
Talk to us and we'll show you how Address Checker fits into your workflow.
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