Instantly.ai

Instantly.ai is the leading cold email infrastructure platform for agencies and sales teams running high-volume outbound. Founded in 2021, bootstrapped to profitability, now serving 50,000+ sales teams. Its core advantage is deliverability at scale: unlimited email accounts, automated warmup, and SISR (Server and IP Sharding and Rotation) which automatically assigns dedicated IP blocks and swaps flagged IPs immediately to protect sender reputation. The autonomous capability centres on sequence execution and reply classification. Once prospects are enrolled, Instantly sends emails, waits, follows up based on behaviour, and routes replies through the AI Reply Agent which classifies intent (interested, not interested, out of office, referral) and triggers the correct follow-up sequence automatically. No human triage required per reply. This makes Instantly genuinely agentic for high-volume outbound: configure once, run continuously. Integration depth is export-level for most plans. Instantly syncs contacts and campaign data to HubSpot and Salesforce but primarily as an outbound execution layer rather than a full action-level CRM integration. Webhook and API access are available on Hypergrowth and above. The CRM product sold separately provides action-level pipeline management within Instantly itself. Pricing is modular with separate subscriptions for Outreach, Instantly Credits (lead database, 450M+ contacts), and CRM, each with their own tier structure. Outreach plans: Growth $47/month (5,000 emails/month, 1,000 uploaded contacts), Hypergrowth $97/month (100,000 emails/month, 25,000 contacts), Light Speed $358/month (500,000 emails/month), Enterprise custom. Credits expire monthly with no rollover. Full stack running Outreach plus Credits plus CRM costs significantly more than the $47 entry price. SOC 2 certified. GDPR compliant. G2 rating: 4.9/5 from 3,300+ reviews.