Last updated: March 2026
MillionVerifier offers the lowest per-email price in the market, making it attractive for massive bulk lists. However, verification speed is extremely slow (hours for small lists), there's no free tier, and catch-all handling is limited to binary flags. Choose MillionVerifier for pure cost optimization on large batch jobs where time doesn't matter.
| Feature | VeriMails | MillionVerifier |
|---|---|---|
| Price per email | $0.0029 | $0.0015 (bulk) |
| Free tier | 50/day forever | None |
| Catch-all handling | Probability scoring (0-100) | Binary flag |
| API | REST API | REST API |
| Bulk verification | Fast CSV processing | CSV upload (slow) |
| Speed | Sub-2 second | Very slow |
MillionVerifier's accuracy for standard mailboxes is reasonable. They use the typical verification chain: syntax, DNS, MX, and SMTP checks. For straightforward valid/invalid addresses, results are comparable to other providers. The issue is twofold: catch-all domains receive only a binary flag (no scoring), and the slow processing speed means results aren't available for hours. For time-sensitive workflows, this is a serious limitation. VeriMails runs real-time SMTP verification with results in under 2 seconds per address. Combined with catch-all probability scoring, you get faster, richer results.
MillionVerifier's approach to catch-all domains is the industry default: mark them as catch-all and move on. For users verifying massive purchased lists, this means a significant portion of addresses remain in limbo. VeriMails' pattern scoring transforms this unknown pool into actionable segments. Score above 80? Safe to send. Below 30? Skip it. Between 30-80? Send with caution or hold for re-verification. This granular approach is especially valuable for B2B lists where catch-all corporate domains are common.
MillionVerifier offers a REST API, but the service was clearly designed with bulk CSV upload as the primary workflow. API response times are significantly slower than competitors — verification can take several seconds or more per address, and bulk jobs through the API can queue for extended periods. VeriMails was built API-first. Every feature is accessible through our REST API with sub-second response times. The same endpoint that powers our dashboard is available to you. Real-time verification for signup forms, batch processing for list cleaning, and webhook callbacks for async workflows.
MillionVerifier's headline price is compelling: approximately $0.0015 per email for bulk verification, with packages starting at $59 for 50,000 verifications. At 100,000 emails, the cost is roughly $89-$118. This makes them the cheapest bulk option available. The trade-off is clear: no free tier, slow processing, minimal API features, and no catch-all scoring. VeriMails Pro is $0.0029/email — about 2x MillionVerifier's bulk rate. At 10,000 emails, VeriMails costs $29 vs MillionVerifier's approximate $30 (their smallest package starts at 50K). At 100,000 emails, VeriMails is roughly $290 vs $89-$118. The premium buys you real-time speed, catch-all scoring, a free tier, and an API built for production use.
| Volume | VeriMails | MillionVerifier |
|---|---|---|
| 10,000 emails | $29 | ~$30 (min package 50K) |
| 100,000 emails | ~$290 | $89-$118 |
Teams that need real-time verification (signup forms, API integrations). Anyone who needs catch-all probability scoring. Users who verify 10K-50K emails monthly (similar cost, vastly better features). Developers building verification into their workflows.
Budget-constrained teams verifying massive lists (500K+) where per-email cost is the only priority. Batch-only workflows where speed doesn't matter. Users who don't need catch-all scoring or real-time API access.
For pure bulk volume above 50K emails, yes. MillionVerifier's bulk pricing starts around $0.0015/email. But the savings come with trade-offs: very slow processing, no catch-all scoring, no free tier, and limited API capabilities. For most use cases under 50K/month, VeriMails is competitively priced with significantly better features.
Reports from users indicate that verifying even 2,000 emails can take several hours through MillionVerifier. Large lists of 100K+ emails may take a full day or more. VeriMails processes single verifications in under 2 seconds and bulk lists at hundreds of verifications per minute.
Not practically. MillionVerifier's API response times make it unsuitable for real-time form validation where users expect instant feedback. VeriMails is designed for both real-time and batch use with sub-second API responses.
This is actually a reasonable approach. Use MillionVerifier for initial cleaning of massive purchased lists where cost is paramount, then use VeriMails for ongoing verification, catch-all scoring, and real-time API workflows where data quality matters more than raw cost.
50 free email verifications per day. No credit card required. See why teams switch to VeriMails.
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