Upload a CSV. Get verified, scored leads.
Upload a CSV and SendKit maps your fields, verifies every email address (deliverable, undeliverable, risky, unknown), assigns confidence scores, and detects catch-all domains. Bad addresses get flagged before they touch your campaigns.




Lambda Group
Leads
Email | Email Status | First Name | Last Name | Company | Job Title | Tags | |
|---|---|---|---|---|---|---|---|
Verified | Marcus | Chen | Notion | VP of Product | SaaSDecision Maker | ||
Verified | Sarah | Kim | Stripe | Head of Growth | Prospect | ||
Risky | Tom | Bradley | Linear | Engineering Lead | SaaS | ||
Verified | Priya | Patel | Figma | Director of Marketing | SaaSWarm Lead | ||
Verified | David | Wu | Vercel | CTO | Decision Maker | ||
Invalid | Alex | Turner | Acme Corp | Founder | Startup | ||
Verified | James | Wilson | Linear | VP Engineering | SaaS | ||
Not checked | Aisha | Okonkwo | Segment | Revenue Operations | RevOps | ||
Verified | Nina | Ramirez | HubSpot | Sr. Account Executive | SaaSWarm Lead | ||
Verified | Kevin | Liu | Dropbox | VP of Partnerships | Decision Maker | ||
Risky | Rachel | Moore | Asana | Head of Sales | SaaS | ||
Verified | Ben | Carter | Monday | Director of Growth | Prospect |
Clean imports, no duplicates
Upload your CSV and columns get mapped to the right fields automatically. Adjust anything that doesn't match.
Every address is verified: deliverable, undeliverable, risky, or unknown. Bad emails don't reach your campaigns.
Each email gets a confidence score so you can make informed decisions about risky or unknown addresses.
Catch-all domains are flagged during import. These domains accept all addresses but may not deliver.
Upload a CSV, get clean leads
Drag and drop or browse for your CSV. SendKit detects your columns and suggests field mappings.
Common fields like email, first name, and company get mapped automatically. Adjust anything that needs it.
Every email gets verified during import. Results are categorized as deliverable, undeliverable, risky, or unknown. Confidence scores are assigned. Catch-all domains are detected.
Got a lead list from a conference? Upload the CSV and let verification catch bad addresses before they enter your campaign.
Bought a list from an external provider? Import it and SendKit flags undeliverable and risky addresses before you send.
Import any list to run it through verification. Catch-all detection and confidence scoring help you decide which leads are worth emailing.
Smart dedup, not manual cleanup
Email verification with confidence scores during import
Most tools let you import a CSV and hope for the best. SendKit verifies every email during import, categorizing each as deliverable, undeliverable, risky, or unknown with confidence scores. Catch-all domains are detected so you can decide how to handle them.
Four-tier verification with confidence scoring
Every imported email is categorized as deliverable, undeliverable, risky, or unknown. Each gets a confidence score so you can make informed decisions. Catch-all domains are flagged separately since they accept all addresses but may not deliver.
Got questions? We've got answers.
Every email is checked and categorized as deliverable, undeliverable, risky, or unknown. Each gets a confidence score. Catch-all domains are detected separately.
Ready to hit primary?
Set up SendKit's isolated infrastructure and start sending in under 15 minutes.
Dedicated IPs on every plan. Cancel anytime.