Which cold email platform is best for agencies?

Instantly and Smartlead lead for agencies with unlimited account connections and affordable per-client pricing.

Can I white-label cold email reports?

Smartlead and Salesforge offer white-label reporting. Instantly has client management but limited white-label features.

How do agencies manage deliverability across clients?

Use separate domains per client, individual warmup schedules, and tools like GlockApps for per-client deliverability monitoring.

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33+ Tools ReviewedUpdated March 2026Independent & Unbiased

Best Cold Email Platforms for Agencies in 2026

Agencies need cold email platforms that scale across multiple clients without multiplying costs. The key requirements: unlimited or high account limits, client management features, white-label options, and team collaboration. Cost per client matters when you're managing 10+ accounts. Here are the platforms built for agency workflows.