DNSai Email Verify
Help Guide
Everything you need to get started with bulk email verification.
On this page
1. Getting Started
Follow these steps to verify your first batch of emails:
Create an account
Sign up for a free account at the signup page. No credit card required — you get 100 free verifications per month.
Add your email list
On the dashboard, either paste email addresses directly into the text area (one per line) or upload a .csv or .txt file.
Click "Verify Emails"
Review the email count and click the verify button. You'll see a progress bar as each email is checked.
Download your report
Once complete, your report appears in "My Email Verification Reports." Click "Download CSV" to get the full results.
2. CSV & TXT Format Requirements
TXT files
Place one email address per line. Blank lines are ignored.
CSV files
Include a header row. The system scans all columns and automatically detects email addresses, so you don't need to worry about column names or order.
Tip: You can also separate emails with commas or semicolons when pasting into the text area. The system handles all common separators.
Download sample files: sample-email-list.csv · sample-email-list.txt — use these as templates for your own email lists.
Supported formats
- .csv — Comma-separated values with any column layout
- .txt — Plain text with one email per line
Limits
- Maximum file size: 10 MB
- Maximum emails per batch depends on your plan (Free: 100, Starter: 500, Growth: 2,000, Pro: 5,000, Business: 10,000, Enterprise: 25,000)
- Duplicates are automatically removed before processing
3. Understanding Your Results
Each verified email gets several data points. Here's what they mean:
| Field | Description |
|---|---|
| Status | The overall verdict for the email address |
| Confidence Score | A score from 0 to 100 indicating how certain we are about the result |
| AI Verdict | Machine-learning assessment combining multiple signals |
| Is Safe to Send | A simple Yes/No recommendation on whether to include this email in your campaigns |
| Reason | Detailed explanation of why the email was flagged (e.g., "MX record not found," "Mailbox does not exist") |
| Domain Health Score | Score based on MX, SPF, DKIM, and DMARC configuration of the email's domain |
Status values explained
| Status | What it means | Recommended action |
|---|---|---|
| Valid | The email address exists and the mailbox is active | Safe to send |
| Risky | The email might work, but there are warning signs (catch-all domain, temporary address, etc.) | Send with caution or remove |
| Invalid | The email does not exist, the domain has no mail server, or the mailbox was rejected | Remove from your list |
| Unknown | Could not be verified (server timeout, greylisting, or temporary issue) | Retry later or send with caution |
Tip: Use the "Is Safe to Send" column for a quick Yes/No filter. For more nuanced decisions, look at the confidence score and AI verdict together.
4. Troubleshooting Common Errors
"Not enough credits"
Your batch has more emails than your remaining credits for this billing period. You can either reduce the batch size, wait for credits to reset at the start of your next billing period, or upgrade your plan for more credits immediately.
"Invalid file type"
Only .csv and .txt files are accepted. If you have an Excel (.xlsx) file, save it as CSV first using File → Save As → CSV (Comma delimited).
"File too large"
The maximum upload size is 10 MB. If your file is larger, split it into smaller batches and run separate verifications.
"No valid email addresses detected"
The system couldn't find any properly formatted email addresses in your input. Make sure each email follows the [email protected] format. Common issues:
- Extra spaces before or after the email address
- Missing the @ symbol or domain part
- Non-email text mixed in with your list
Verification stuck at 0%
This can happen if the verification engine is processing a large queue. Wait a minute and refresh the page. Your batch will continue processing in the background. If it stays stuck for more than 5 minutes, contact [email protected].
Report shows "processing" for a long time
Large batches (thousands of emails) can take several minutes because each email requires DNS lookups and SMTP checks. The progress bar shows real-time status. If a batch stays in "processing" for more than 30 minutes, contact support.
CSV download is empty or missing columns
Make sure the verification completed successfully (status shows "Complete"). Reports for batches that failed or are still processing cannot be downloaded. If a completed report downloads with missing data, try clearing your browser cache and downloading again.
Still stuck? Email us at [email protected] with your batch ID and a description of the issue. We typically respond within 24 hours.
5. Credits & Billing
Each email verification uses 1 credit. Your monthly credit allowance depends on your subscription tier:
| Plan | Monthly Credits | Price |
|---|---|---|
| Free | 100 | $0/mo |
| Starter | 2,000 | $29/mo |
| Growth | 10,000 | $79/mo |
| Pro | 25,000 | $149/mo |
| Business | 50,000 | $249/mo |
| Enterprise | 100,000 | $399/mo |
- Credits reset automatically at the start of each billing period
- Unused credits do not roll over to the next month
- Upgrading gives you the new credit allowance immediately
- You can view your current usage on the dashboard or account page
Manage your subscription, update payment methods, or view invoices from your Account Settings page.
Need more help?
Check our FAQ for quick answers, or contact us at [email protected].
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