Email address validation: syntax, domain, disposable and role checks. Your client pastes their MailboxValidator key once, and your agent or your code works with their access.
Email
About MailboxValidator
Through Operate As, your agent, n8n workflow or code works in MailboxValidator with your client's own access. Your client pastes their API key from MailboxValidator once. We store it encrypted, so it never sits in an email or a shared doc. Your agent reaches any endpoint of MailboxValidator's API through the request tool, with the client's access attached.
Common uses in Email
Triage the inbox and draft replies for review
Follow up on leads and unanswered threads
Send updates and confirmations as they happen
MailboxValidator
MailboxValidator · Email
API key
Email address validation: syntax, domain, disposable and role checks
The client pastes their API key from MailboxValidator's settings. We store it encrypted.
Tested against MailboxValidator's live API.
Building with MailboxValidator? The docs have setup steps and code for every tool.
Add a client, select the services, copy the link. You'll get an email the moment their access is ready. Start free, no card required. Paid plans are one flat monthly price, and a busy month never takes your agents offline.