Reduce Bounce Risk
Bounce-rate risk rises the longer since your last send.
Clean and Verify Your Old Email List
Old lists decay fast. The longer since your last send, the more addresses have gone dead. Upload your list and know exactly which ones are still safe to mail, in minutes.
- 100 free credits
- No credit card required
- 99.8% accuracy
Why Old Email Lists Need Cleaning
Every month a list sits unused, more of its addresses go dead, get recycled into spam traps, or simply stop existing.
Protect Your Sender Reputation
Sender reputation drops if you skip verification.
Email Lists Decay Over Time
~25%of a list can go bad in a single year
Inactivity accelerates decay. As addresses go stale, your deliverability and sender reputation take a hit.
How to Clean an Old Email List
Choose the entry point that fits your current stack and get clean, deliverable data in minutes, on infrastructure designed for high-integrity bulk cleaning.
- 99.9% Uptime API Guarantee
- SOC2 Type II Compliant Processing
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Step 01CSV / XLSXUpload Your Email List
Upload a CSV, TXT, or XLSX file with up to 25,000 emails per batch.
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Step 02Fast copyPaste a Smaller Email List
Copy & paste addresses directly for smaller, one-off lists.
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Step 03ProgrammaticConnect Email List Cleaning to Your Workflow
Connect the API to send lists programmatically for recurring cleanups.
Email Verification API -
Step 04OutcomeDownload Your Cleaned Email List
Get a status-tagged file back, ready to filter and send.
Get a Clean, Verified Email List
Every address comes back clearly tagged, so you know exactly what to keep, what to drop, and what to double-check before your next campaign.
- KeepValid
- DropInvalidDo Not Mail
- Double-checkRiskyCatch-All
Secure Email List Cleaning
ReachStream Email Verifier maintains rigorous security certifications and complies with major global data protection standards.
- GDPR Compliant
- ISO 27001:2022
- PIPEDA Compliant
- SOC 2 Type II
- DPDPA Compliant
- CCPA Compliant
Email List Cleaning Plans
Start free, pay only for what you verify.
Free Trial
$0for 30 days
100 verification credits to start
- All status tags
- CSV & TXT upload
- Full API access
Starter
$15/mo
5,000 credits every month
- Everything in Free
- Bulk upload to 25k
- Email support
- Full API access
Growth
$39/mo
20,000 credits every month
- Everything in Starter
- Full API access
- Priority support
Pro
$79/mo
50,000 credits every month
- Everything in Growth
- Team seats
- Integrations
- Full API access
Enterprise
Custom
Volume pricing for high-scale lists
- Everything in Pro
- SSO & SAML
- Dedicated manager
- Full API access
Frequently Asked Questions
Upload your list to ReachStream Email Verifier as a CSV file, up to 25,000 emails per batch. Each address is checked in minutes and returned with a status tag (Valid, Invalid, Risky, Catch-All, or Do Not Mail), so you know exactly which contacts are still safe to email.
ReachStream Email Verifier delivers up to 99.8% accuracy on deliverable addresses, using syntax checks, domain and MX validation, and mailbox-level probing rather than a single-pass syntax check alone.
Yes. Cleaning protects your reputation going forward by flagging invalid, risky, and catch-all addresses before you send to them. Verification checks deliverability signals without emailing the addresses on your list, so the check itself doesn't affect your sender reputation.
Use the CSV file format, with up to 25,000 email addresses per batch upload.
Yes. Unused credits expire at the end of each billing cycle and don't roll over. Free Trial credits are valid for the 30-day trial period.
Yes. ReachStream Email Verifier supports bulk CSV upload for cleaning larger lists at once, plus instant single-address verification for one-off checks.
Email addresses decay over time as people change jobs, abandon inboxes, or get removed by their provider, so a list that was valid a year ago can have a meaningfully higher bounce rate today. Re-verify before you send to catch dead or risky addresses before they damage deliverability.
Clean Your Old Email List Before You Send
Upload it free. No credit card, no commitment. Know in minutes which addresses are still safe to send.