digitargetsQ: Credits and data quality
I have a few questions before buying:
1. Do the lifetime daily credits and bonus credits both work through the API, or only the dashboard?
2. What are the API rate limits for bulk verification, and is there a bulk API endpoint or only one email at a time?
3. Do unused daily credits roll over, or reset each day?
4. How do you report catch-all ("accept-all") domains, and do they use credits?
5. Are "unknown" results refunded on the lifetime plan too?
6. How accurate is verification for Microsoft 365 and Google Workspace domains, which most of our prospects use?
7. Do you store the email lists we upload, and for how long? Can we delete them?
8. Can we use the account for client campaigns, and can we add team members or separate workspaces per client?
9. Does verification ever send an email or otherwise contact the address being checked?
ReoonSupport
Nov 4, 2026A: Thank you for the questions! Here are the details to help you before getting started:
1. Credit usage via API vs. Dashboard: Both daily credits and instant/bonus lifetime credits work across both the dashboard and the API. When verifying, your daily credits are automatically used first, and instant credits are used once daily credits run out.
2. Bulk API & Rate Limits: Yes, we have a dedicated Bulk Email Verification API endpoint (create-bulk-verification-task) in addition to our single verification endpoint. The bulk endpoint accepts up to 50,000 emails per submission with an average speed of 1,000–1,500 emails per minute (up to 3,000/min, which is automatically determined based on different factors). For the single verification endpoint, up to 5 parallel continuous connections are supported.
3. Daily Credit Rollover: Daily credits reset every day at 12:05 AM GMT and do not roll over or accumulate. Instant/bonus credits, however, never expire and remain in your balance until used.
4. Catch-All Domains & Credits: Catch-all domains are identified and reported with the status catch_all (along with the parameter is_catch_all: true). Since successfully detecting that a server accepts all emails is a completed verification, it consumes 1 credit.
5. Refunds on 'Unknown' Status: Yes, credits for any email that returns an 'unknown' status are automatically refunded across all plans, including lifetime plans.
6. Accuracy on Google & Microsoft: Our verification accuracy is extremely high: around 99.6% for Google (including Google Workspace) and around 96% for Microsoft (including Microsoft 365).
7. Data Storage & Manual Deletion: Uploaded verification lists are protected with AES-256 encryption and are automatically deleted after 15 days (only high-level statistical counts are kept). You can also manually delete your verification files immediately from our servers at any time via the Tasks & Results page.
8. Workspaces & Team Members: You can certainly use your account to verify lists for client campaigns. However, sub-accounts and separate client workspaces are not currently supported. Team members can share the main login if needed, and you can create separate API keys in the dashboard for different tools or campaigns.
9. Sending Emails during Verification: No, we never send an email or contact the recipient address. Verification is performed through DNS checks, MX validation, SMTP handshakes and other things that terminate before any message is sent.
Please let us know if you have any other questions. Have a wonderful day!