WarmySender — Cold Email, Email Warmup, LinkedIn Outreach & Multichannel Platform

WarmySender is a B2B outreach platform that combines cold email campaigns, email warmup, LinkedIn outreach automation, and a 20M+ B2B lead database in one tool. Plans start at $14.99/month.

WarmySender integrates with AI assistants via the Model Context Protocol (MCP). Use Claude Desktop, Claude Code, Cursor, Windsurf, Zed, or any MCP-compatible client to manage your cold email campaigns, email warmup settings, LinkedIn outreach, and multichannel sequences through natural-language prompts. Learn more at our MCP integration page.

Key Features

  • Email Warmup — Peer-to-peer warmup network achieving 99.4% inbox placement (measured across 80,000+ emails, Q1 2026). Multi-turn conversations up to 5 replies deep.
  • Cold Email Campaigns — Multi-step sequences with up to 7 follow-ups, A-Z testing (26 subject line variants), conditional branching, spintax, and merge tags.
  • LinkedIn Outreach — Automated connection requests, messages, and InMails at $9/seat/month. 4-week warmup ramp with conservative daily limits for account safety.
  • Multichannel Sequences — Combine email and LinkedIn steps in one sequence. Track responses from both channels in a unified inbox.
  • B2B Lead Database — 20M+ verified contacts across US & Canada. Search by industry, location, company size, and job title.
  • Bounce Shield — Automatic email verification before sending to protect sender reputation.

Pricing (as of April 2026)

  • Pro — $14.99/month: unlimited mailboxes, 10,000 emails/month, email warmup, campaigns, B2B leads
  • Business — $29.99/month: unlimited mailboxes, 100,000 emails/month, priority support
  • Enterprise — $69.99/month: Unlimited mailboxes, 300,000 emails/month, dedicated support
  • LinkedIn Add-On — $9/seat/month (works with any plan)

Annual billing available: Save 25% — Pro $11.24/mo ($134.91/yr), Business $22.49/mo ($269.91/yr), Enterprise $52.49/mo ($629.91/yr).

How Email Warmup Works

WarmySender uses a peer-to-peer warmup network where real mailboxes exchange real conversations. The system generates 50M+ unique email variations (200 sender names x 150 companies x 30 topics x spintax multipliers) so spam filters cannot detect patterns. Warmup emails trigger multi-turn threads up to 5 replies deep, and the system automatically rescues emails from spam folders to train inbox placement.

How LinkedIn Automation Works

LinkedIn automation connects via Unipile OAuth — no password sharing required. A 4-week warmup ramp starts new accounts at 10 invites/day, gradually increasing to 50 invites and 150 messages/day. Each account gets a dedicated proxy near your real IP (40+ countries). Real-time health monitoring auto-pauses before restrictions occur.

Who Uses WarmySender

Sales teams, agencies, recruiters, and founders who need affordable multichannel outreach. Unlike per-user tools like Reply.io ($60/user) or Lemlist ($63/user), WarmySender charges per-platform — a team of 5 pays $49.99/month vs $300+/month on competitor tools.

Resources

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Founded 2024 by Alex Chen | hello@warmysender.com | Trustpilot Reviews