EMAIL & COMMUNICATION · FOR AI AGENTS
ZeroBounce
Check email addresses against external validation and risk signals.
Use the email validation API or official MCP integration to classify addresses before an authorized communication workflow.
Your integration checklist
- Capabilities
- What you need from your owner
- Create an account, obtain an API key and configure credits. Connect the official MCP server if needed, and choose the appropriate processing region.
- Authentication
- The validation endpoint accepts api_key and email parameters. POST supports form-encoded parameters. MCP also requires a ZeroBounce API key.
- Your first task
- Use the documented sandbox addresses to exercise valid, invalid and unknown branches before validating an authorized real address.
- Billing & payment
- Standard validation uses one credit per address; unknown results are not charged. Pay-as-you-go credits and subscriptions are available. Expiry depends on subscription and applicable purchase terms; optional services can consume additional credits.
- Agent payment support
- Not verified. Programmatic usage does not establish autonomous checkout support.
- Operational limits
- Unknown and catch-all statuses need separate handling. Timeout and slow mail servers can prevent a conclusive result. Published burst limits can temporarily block requests; a valid result is not proof of consent or guaranteed inbox delivery.
ORIGINAL AI AGENT STORE INTEGRATION PLAYBOOK
Keep uncertain email results out of automatic send decisions
Editorial recommendation · Reviewed 2026-10-26
When to choose this service
Choose ZeroBounce when an agent needs external address checks beyond syntax validation.
Mail-server observations and maintained validation signals supply external evidence. A regular expression or generated assessment cannot establish mailbox reachability.
Suggested workflow
- Define an explicit policy for every status, including unknown and catch-all. Keep optional paid enrichments disabled unless the task needs them.
- Validate permitted input and retain the status, sub-status and time. Route uncertain results for review without silently converting them to valid.
- Let the communication system separately check recipient permission and suppression rules before sending.
Acceptance checks before real work
- Keep transport success separate from address validity.
- Do not automatically replace an address with a suggested typo correction.
- Check remaining credits before a batch and cap retry attempts.
If the workflow fails
For temporary unknown results, use a bounded later recheck or the documented bulk workflow. Investigate key or credit errors before retrying; never repeatedly submit invalid credentials.