Smartlead

Smartlead is a cold email outreach and sales-engagement platform built to send at scale while protecting deliverability. Its signature is unlimited email accounts and automatic warmup on every plan, so teams and agencies can spread sending across many inboxes (mailbox rotation) to stay under provider limits and land in the primary inbox. You upload leads, build multi-step sequences with conditional logic, and manage all replies in a unified master inbox — making it a favorite of agencies and sales teams running high-volume outbound.

The platform focuses on deliverability and scale. Unlimited mailboxes with rotation and warmup keep sender reputation healthy; a master inbox consolidates conversations across all accounts; and analytics, A/B testing, and a global block list optimize campaigns. Higher tiers add a custom CRM, webhooks and API, and white-label client portals for agencies, plus lead verification. Because pricing is by plan (not per seat) with unlimited email accounts, Smartlead is especially cost-effective for agencies managing many campaigns and clients.

Smartlead serves agencies, sales teams, and founders running high-volume cold outreach. Pricing (annual saves ~17%) includes Base around $39/month (2,000 leads, unlimited inboxes and warmup), Pro around $94/month (30,000 leads, custom CRM, API, webhooks, white-label), Unlimited Smart around $174/month, and Unlimited Prime around $379/month (highest limits, dedicated support). Note real all-in cost adds mailboxes, domains, and verification. It competes with Instantly, Lemlist, Woodpecker, and Mailshake, differentiating on unlimited inboxes with warmup and agency white-labeling.