Email verification you can understand.
MailQuell helps you remove invalid, disposable and risky addresses before you send — through a web app for CSV lists and a REST API for sign-up forms and integrations — and, with AI lead qualification, shows you which companies on your list actually match your ideal customer. Start free with 200 checks every month; pay only for more volume.
MailQuell is operated by MailQuell, Agadir, Morocco.
Checks without sending
We verify syntax, domain and MX records, SPF/DMARC, and ask the recipient's mail server whether the mailbox exists — then disconnect. No email is ever sent to the addresses you check.
Honest results
Some servers accept every address (catch-all) or delay answers (greylisting). Instead of guessing, we label those results as risky or unknown so you can decide.
Your lists stay yours
We never sell or share your lists, and never use them to build our own database. The uploaded list is deleted when a task finishes, and its results 20 days later.
Responsible probing
Checks to the same domain are spaced out and mass address-guessing is not allowed, which protects mail servers and keeps results reliable.
Account security
HTTPS everywhere, hashed passwords, optional two-factor authentication, hashed API keys, and sessions you can see and revoke at any time.
AI lead qualification
Describe who you sell to and we read each company's public website to tell you which contacts fit, with a score per criterion. Only website text goes to the AI, never the addresses in your list. 50 free AI credits every month.
Questions?
Write to support@mailquell.com or use the contact form.