How to verify a CSV email list

From the dashboard: Verify → upload CSV or Excel (or paste). From the API: POST /api/v1/verify/bulk, /verify/bulk/paste, or /verify/bulk/upload with a Bearer key.

Watch the job until it completes. Then download an export. Prefer Valid only for cold send, or Valid plus safe catch-alls if you explicitly want that reach.

Limits worth knowing

Sandbox bulk is capped at 100 addresses and does not run live SMTP. Live jobs have plan-level parallel bulk limits. Unknown rows are refunded.

More on the job itself: bulk email verification.