Single email verification
Check one email address in real time for signup forms, CRMs, lead capture flows, support tools, and enrichment workflows.
InboxIQo API
Email Verification API for Apps, CRMs, and Automation
Verify single emails, bulk lists, and queued jobs from your product, lead workflow, enrichment pipeline, or internal tool using api.inboxiqo.com.
curl -X POST https://api.inboxiqo.com/v1/email/verify \
-H "X-Api-Key: YOUR_API_KEY" \
-H "Content-Type: application/json" \
-d "{\"email\":\"contact@example.com\",\"tag\":\"crm-import\"}"
Built for integration
Everything needed for real-time and bulk email verification
Use the same verification engine that powers the InboxIQo web app, with API access for your own systems and partner distribution.
Bulk verification
Submit multiple emails in one request for list cleaning, imports, campaign preparation, and periodic contact hygiene.
Queued jobs
Use queued endpoints for larger batches, then poll job progress and download result files when processing is complete.
Tags and reports
Add a tag to group results by campaign, import, customer, source, or workflow so reports are easier to filter and export.
Result categories
Clear statuses for cleaner sending decisions
InboxIQo returns practical verification categories so your application can route contacts, suppress risky addresses, and protect sender reputation before sending.
Valid
Invalid
CatchAll
Disposable
Spamtrap
Unknown
Reduce hard bounces before campaigns and automations run.
Detect disposable, risky, catch-all, and unknown addresses.
Use the same result wording across web, direct API, RapidAPI, and Apify workflows.
Unknown results are not charged or are refunded for direct InboxIQo credit usage.
Endpoint preview
Start simple, scale to queued processing
POST
/v1/email/verifyVerify one email address.POST
/v1/email/bulkVerify a batch synchronously.POST
/v1/email/bulk/jobsCreate a queued bulk verification job.GET
/v1/jobs/{jobId}Check queued job progress and counts.GET
/v1/jobs/{jobId}/download/{category}.csvDownload filtered CSV results.Authentication and credits
Generate one active API key from your InboxIQo dashboard and send it with each request.
X-Api-Key: YOUR_API_KEYFor direct InboxIQo usage, one verified email costs one credit. Pay-as-you-go and monthly subscription plans are available.
Marketplace-ready
InboxIQo also supports dedicated wrapper flows for RapidAPI and Apify, while keeping the core verification behavior consistent with the web app and direct API.
Marketplace billing, daily limits, monthly limits, and concurrency rules can be handled separately from direct InboxIQo credits.
