Uploading Your Lead List
Creating SequencesUpdated January 15, 2026
Drag and drop your CSV file into the upload field (or click to browse).
Required Columns
At minimum, your CSV must include:
| Column | Description |
|---|---|
| First Name | The lead's first name |
| The lead's email address |
Recommended Columns (Better Personalization)
The more data you provide, the better MachFive can personalize each email:
| Column | Why It Helps |
|---|---|
| Last Name | Allows full name usage when appropriate |
| Company Name | Company-specific personalization |
| Job Title | Role-specific messaging |
| Industry | Industry-relevant pain points and proof |
| Company Size | Size-appropriate offers |
| Location | Geographic personalization |
| LinkedIn URL | Profile-based personalization |
| Company Website | Company research for tailoring |
| Custom Fields | Any additional context (recent funding, tech stack, etc.) |
Pro Tip: See MachFive Maverick: Lead Enrichment to learn how to enrich your leads with additional data points using tools like Clay.