This guide explains the maximum number of leads you can import into lemlist, depending on the import method you use (CSV, API, or integrations). Use it to plan campaign setup, avoid failed imports, and keep your outreach scalable.

To successfully import leads, make sure you know:

• Which import method you’ll use (CSV, API, HubSpot/Pipedrive/Salesforce, or Chrome extension)
• How many leads you plan to add per campaign (some limits apply at the campaign level)

Use the section below to find the limit that applies to your situation:

You can upload up to 40,000 leads via CSV, split into batches of 10,000 leads per campaign.

You can add up to 40,000 leads per campaign via the API. Leads are added one at a time (each lead requires an API call).

You can import a maximum of 10,000 leads per campaign using HubSpot or Pipedrive integrations.

Salesforce imports are limited to 2,000 leads per campaign.

Using the Chrome extension, you can add up to:

• 999 leads from LinkedIn
• 2,500 leads from Sales Navigator

Importing more leads isn’t always better. Keeping campaigns at a manageable size helps you personalize outreach, protect your domain reputation, and improve deliverability. If you need to reach a large audience, consider splitting leads across multiple campaigns and ramping up gradually.

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