Free tools
Measure list risk before it reaches your sender
Use these calculators and sample checks to see where email quality is costing money, hurting deliverability, or polluting signup and CRM data.
MX Lookup
Resolve a domain's mail servers, see their priority order, and identify the email provider behind any address.
Open toolSPF Checker
Fetch and parse a domain's SPF record, count DNS lookups against the limit of 10, and catch permissive or duplicate records.
Open toolDMARC Checker
Read a domain's DMARC policy, check whether it actually enforces, and find missing aggregate reporting.
Open toolDKIM Checker
Look up a DKIM public key by selector, or probe common provider selectors like google, selector1, and k1.
Open toolDisposable Email Detector
Check an address or domain against known temporary and throwaway mail providers and confirm it can receive mail.
Open toolCatch-All Checker
Probe a domain's mail server over SMTP to find out whether it accepts mail for every possible address.
Open toolEmail Syntax Validator
Run RFC-aware syntax checks on an address and confirm the domain has MX records before you trust it.
Open toolList Damage Report
Paste a sample list, find syntax damage locally, and verify a capped sample with Verifly demo checks.
Open toolBounce Bill Calculator
Estimate monthly bad sends, wasted send spend, verification costs, and savings versus common providers.
Open toolDomain Health Checker
Check MX, SPF, and DMARC records before validating individual mailboxes or importing a list.
Open toolAPI Playground
Run a capped email verification demo and copy production curl, JavaScript, and Python API examples.
Open toolEmail List Deduplicator
Paste CSV or raw text, remove duplicate emails, flag obvious list damage, and export a cleaner file.
Open toolEmail Risk Checker
Check one address for syntax, role-account, disposable-domain, and public mail-DNS risk signals.
Open toolDisposable Email Checker
Check emails, domains, URLs, or CSV exports against common temporary and throwaway email domains.
Open toolSPF and DMARC Generator
Generate sender DNS records for Google Workspace, Microsoft 365, Mailchimp, SendGrid, Mailgun, and SES.
Open toolEmail Typo Fixer
Fix common Gmail, Yahoo, Outlook, Hotmail, iCloud, AOL, and ProtonMail domain typos before verification.
Open toolFor full list cleaning, batch jobs, API keys, and CSV exports, create a Verifly account and use the production verification API.