mailfloss
Email verification software
- Features
- Ease of use
- Ease of management
- Quality of support
- Affordability
- Market presence
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$29 per month
Free Trial
Free version unavailable
Small
Medium
Large
- Education and training
- Public sector and nonprofit organizations
- Arts, entertainment, and recreation
What is mailfloss
mailfloss is an email list cleaning and verification tool that helps teams identify invalid, risky, or low-quality email addresses to reduce bounce rates and protect sender reputation. It is typically used by marketers and revenue teams that run email campaigns through email service providers and CRMs. The product emphasizes automated, ongoing list hygiene rather than one-time batch verification, with integrations and workflows designed to keep lists clean over time.
Automated ongoing list hygiene
mailfloss is designed for continuous cleaning, not just ad hoc uploads, which fits teams that add new contacts daily. Automation can reduce manual exports/imports and recurring list-maintenance work. This approach is useful when multiple systems feed a single sending platform and list quality changes over time.
ESP and CRM integrations
The product focuses on connecting to common email platforms so teams can act on verification results inside their existing workflows. Integrations can streamline suppression or removal of bad addresses without building custom scripts. This is practical for small teams that need operational simplicity rather than a standalone verification console.
Actionable risk categorization
Beyond simple valid/invalid outcomes, mailfloss typically classifies addresses into risk categories (for example, role-based, disposable, or unknown). This helps teams apply different policies (suppress, segment, or monitor) depending on risk tolerance. It supports deliverability-oriented decision-making rather than treating all non-valid results the same.
Limited enrichment and prospecting
mailfloss is primarily a list hygiene and verification product, not a full prospecting or sales intelligence platform. Teams looking for built-in lead sourcing, firmographic data, or deep contact enrichment will likely need additional tools. This can increase total workflow complexity when verification is only one part of a broader outbound stack.
Verification uncertainty edge cases
Like other verification tools, some domains and configurations (catch-all, temporary blocks, strict SMTP settings) can produce “unknown” or probabilistic results. That means teams may still need policy decisions and monitoring rather than fully automated deletion. Over-aggressive suppression can also remove potentially reachable contacts if rules are not tuned.
Integration-dependent operations
The value of continuous cleaning depends on the quality and coverage of integrations with the systems where contacts live and where email is sent. If a team uses a niche CRM/ESP or custom database, they may need manual processes or API workarounds. This can reduce the benefit of automation compared with a simple batch-verification workflow.
Plan & Pricing
| Plan | Price | Key features & notes |
|---|---|---|
| Lite | $29 per month | 10,000 credits/month; Automatic daily cleanup; 1 ESP integration; Zapier access; Real-time API; $0.005 overage per email; 10% off prepaid credits; 7-day free trial (credit card required). |
| Business | $59 per month | 25,000 credits/month; Automatic daily cleanup; Up to 10 ESP integrations; Zapier access; Real-time API; $0.003 overage per email; 15% off prepaid credits; 7-day free trial (credit card required). |
| Pro | $209 per month | 125,000 credits/month; Automatic daily cleanup; Unlimited ESP integrations; Zapier access; Real-time API; $0.001 overage per email; 20% off prepaid credits; Priority support; SSO; 7-day free trial (credit card required). |
Notes: Prepaid (one-time) credits are offered ("Prepaid Credits. These credits do not expire."), but the public pricing page only shows a purchase link for a 10,000-credit pack without a listed price.
