Instantly.ai
Scale cold email outreach with unlimited accounts and AI-powered deliverability
Founded
2021
Starting Price
$37
Category
Sales & CRM
Last updated February 15, 2026
About Instantly.ai
Instantly.ai is a cold email outreach platform built for SDR teams and agencies that need to send high-volume personalized campaigns without landing in spam. It combines unlimited email account connections, automated warmup across a network of 4.2M+ accounts, and a built-in B2B lead database of 450M+ verified contacts. The platform handles email rotation, deliverability optimization, and AI-powered sequence building so sales teams can focus on closing deals rather than managing infrastructure. Founded in 2021 and bootstrapped to $20M+ ARR, Instantly has become one of the fastest-growing cold email tools by offering flat-fee pricing instead of per-seat models.
Pros & Cons
Pros
- Unlimited email accounts and warmup included on all plans — no per-seat pricing means SDR teams can scale sending volume without per-user cost increases
- Largest private deliverability network of 4.2M+ accounts ensures high inbox placement rates and reduces spam risk for cold outreach campaigns
- Done-for-you email infrastructure setup eliminates the tedious technical work of domain purchasing, DNS configuration, and warmup scheduling
- Built-in 450M+ verified B2B lead database with SuperSearch means SDRs can prospect and launch campaigns without switching between separate tools
Key Features
Unlimited Email Accounts & Warmup
Connect unlimited Gmail, Outlook, and SMTP accounts with automated warmup across a 4.2M+ account network that mimics human engagement to build sender reputation and avoid spam folders
SuperSearch Lead Database
Access 450M+ pre-verified B2B contacts with advanced filters by job title, company size, industry, tech stack, and location. Includes waterfall enrichment across multiple data providers
AI Campaign Builder
AI generates personalized email sequences with spintax, conditional logic, and custom variables. A/Z testing with unlimited variations lets the AI optimize toward the best-performing campaigns
Unibox (Unified Inbox)
Centralize all replies from connected sending accounts in one inbox with AI-powered response categorization that automatically labels replies as Interested, Not Interested, Out of Office, or custom categories
Done-For-You Email Setup
Automated domain registration, DNS configuration (MX, SPF, DKIM, DMARC), and email account creation delivered in 24-72 hours with up to 25 inboxes per domain
Smart Inbox Rotation
Automatically distribute sending volume across all connected accounts within a single campaign, bypassing per-account limits while maintaining deliverability across providers
Pricing
Growth (Sending)
$37/month
- 1,000 uploaded contacts
- 5,000 emails per month
- Unlimited email accounts
- Unlimited email warmup
- A/B testing & sequences
Best For
High-Volume Cold Email Outreach
SDR teams sending 1,000+ cold emails per week can leverage unlimited accounts and smart rotation to scale campaigns while maintaining deliverability across multiple domains
Agency Lead Generation
Marketing and sales agencies managing outbound campaigns for multiple clients benefit from flat-fee pricing, separate account workspaces, and done-for-you email infrastructure
Startup Founder-Led Sales
Early-stage founders running their own outbound can use SuperSearch to build prospect lists and launch personalized campaigns without hiring dedicated SDRs or buying separate tools
SDR Team Scaling
Growing sales teams can add unlimited email accounts as they hire new reps without increasing subscription costs, making it ideal for rapidly scaling outbound operations
Similar Tools
Featured In
#2
7 Best AI Cold Outreach Platforms for SDR Teams (2026)
Best for high-volume email-only SDR teams — unlimited accounts at flat pricing delivers the lowest cost per email sent with industry-leading warmup infrastructure.
#1
Instantly.ai vs Lemlist: Which Cold Outreach Platform Wins? (2026)
Best for SDR teams and agencies that prioritize email volume, deliverability, and cost-efficient scaling over multichannel personalization
