MailVeri Web App Overview

MailVeri is an email verification API built for founders, growth teams and developers who need clean lists before they send. Outreach and SaaS teams lose money every time a campaign hits invalid, disposable or risky inboxes. Bounces hurt sender reputation, and once a domain's reputation drops, even good emails start landing in spam. MailVeri gives you a simple verify step you can run before every send.

Paste a list into the app or call the API and get back deliverability signals in real time or in bulk. You can use it when you are warming a new sending domain, importing leads from enrichment tools, buying or scraping a list, or cleaning an aging CRM export that has not been touched in a year. The goal is the same each time: remove the addresses that will bounce, keep the ones that can receive your message, and protect the reputation you have built.

Flagging invalid, disposable and risky addresses is the core job. Disposable inboxes are throwaway addresses that often bounce or complain, and risky addresses are the ones that may accept mail but are likely to hurt deliverability. Catching them before they reach your sequencer means fewer bounces, a cleaner sender score and more messages in the primary inbox.

Pricing is simple. Every new account gets 1,000 free credits with no credit card required, so you can test your real list before you pay anything. After that it is pay-as-you-go at $9 per 10,000 credits, and credits never expire. There is no monthly plan to forget about. Teams that verify continuously can top up as volume grows, and occasional users can keep a small balance for when they need it.

For developers there is a REST API with an Auth-Token header and endpoints for single and bulk verification, plus a download endpoint for bulk results. For AI agents and MCP-compatible tools there is an open-source MCP server that exposes verification as a tool, so an agent can check an address before it writes to a CRM or sends a message. A free email checker is also available for quick one-off checks.

Who it is for: founders running outbound, growth and marketing teams managing newsletters and lifecycle email, sales operations teams cleaning CRM data, and engineers adding verification to signup forms and imports. It fits alongside the sequencers and CRMs you already use, because it sits in front of them as one verify step.

Why MailVeri: it is focused on one job and does it without the overhead of an enterprise suite. There is no long contract, no seat fee, and no need to replace your stack. You get clear results, a free starting point, and pricing you can predict. Founder Alex So built MailVeri for operators who want a simple verify step before every send.