Making professional email outreach accessible to every business
Our Mission
WarmySender exists to make professional email outreach accessible to every business. We believe that reaching the right inbox should not require enterprise budgets or deep technical expertise. Our platform combines email warmup, cold email campaigns, LinkedIn outreach automation, and a B2B leads database in a single, affordable tool.
Our Story
WarmySender was founded in 2024 after our team experienced the frustration of poor email deliverability firsthand. Cold emails were landing in spam, outreach campaigns were underperforming, and the available tools were either too expensive or too fragmented. We saw an opportunity to build something better: a unified outreach platform that prioritizes deliverability from the ground up.
What started as an email warmup solution quickly grew into a full outreach platform. Today, WarmySender handles email warmup, multi-step cold email campaigns, LinkedIn automation, and provides access to a 75M+ B2B lead database — all from a single dashboard starting at $14.99/month.
Note: WarmySender is not affiliated with Warmy.io or any other similarly-named service.
Key Milestones
600+ expert articles published on email deliverability, cold email, and LinkedIn outreach
75M+ B2B leads in our searchable contact database
99.4% inbox placement rate verified across 80,000+ warmup emails
50M+ unique email variations powering the peer-to-peer warmup network
115,000+ conversation threads with multi-turn warmup exchanges up to 5 replies deep
Founder
Numan Hamza — Founder & CEO
Numan Hamza is an email deliverability expert with a background in marketing automation and B2B sales technology. After years of working with cold email systems and seeing teams struggle with inbox placement, he founded WarmySender to solve the deliverability problem at its core. His approach centers on building a peer-to-peer warmup network that uses real mailboxes and real conversations, rather than simulated interactions, to build genuine sender reputation.
Team Expertise
The WarmySender team brings deep expertise across the core disciplines that power the platform:
LinkedIn Automation: Safe LinkedIn outreach with dedicated proxies, 4-week warmup ramps, conservative per-account daily and weekly caps, and a scheduler that enforces those limits regardless of what triggered the action.
B2B Sales Technology: Multi-step sequence design, A-Z testing (26 variants), conditional branching, and CRM integrations with HubSpot, Salesforce, and Pipedrive.
Data & Infrastructure: Scalable peer-to-peer warmup network, scalable queue processing, and real-time analytics across millions of email interactions.
Core Values
Deliverability-First: Every feature we build starts with the question: "Does this protect or improve inbox placement?" Our peer-to-peer warmup network, adaptive strategy engine, and Bounce Shield system all exist to keep your emails out of spam.
Transparent Pricing: No hidden fees, no per-mailbox charges, no surprise overages. Pro starts at $14.99/month with email warmup included. LinkedIn outreach is $15/seat/month.
Data Privacy: We encrypt all email credentials with AES-256-GCM, connect Outlook and Microsoft 365 via OAuth (Sign in with Microsoft) and Gmail and other providers via encrypted app passwords over IMAP/SMTP, and never sell your data.
Platform Capabilities
Email Warmup: Peer-to-peer warmup network with 50M+ unique email variations, deep conversation threading, and adaptive strategy engine (A.H.D.E.).
Cold Email Campaigns: Multi-step sequences with merge tag personalization, A-Z testing (26 variants), conditional branching, and mailbox rotation.
LinkedIn Outreach: Automated connection requests, messages, and InMails with dedicated proxy per account and 4-week safety ramp.
B2B Lead Database: 75M+ verified business contacts searchable by role, industry, company size, and location.
Unified Inbox: Email and LinkedIn replies in one dashboard with sentiment tagging and bulk operations.
Analytics & Reporting: Real-time tracking of opens, clicks, replies, bounces, and LinkedIn engagement, plus warmup inbox-vs-spam rates per mailbox.
WarmySender was founded by Numan Hamza, an email deliverability expert with a background in marketing automation and B2B sales technology. He founded WarmySender in 2024 to solve the email deliverability problem at its core using a peer-to-peer warmup network.
When was WarmySender founded?
WarmySender was founded in 2024 after the team experienced poor email deliverability firsthand. What started as an email warmup solution grew into a full outreach platform combining email warmup, cold email campaigns, LinkedIn automation, and a 75M+ B2B lead database.
What content does WarmySender publish?
WarmySender has published 600+ expert articles on email deliverability, cold email strategies, LinkedIn outreach, and B2B sales — all available on the WarmySender blog.
What is WarmySender's inbox placement rate?
WarmySender achieves a 99.4% inbox placement rate, verified across 80,000+ warmup emails. The peer-to-peer warmup network uses 50M+ unique email variations and 115,000+ multi-turn conversation threads.
How do I contact WarmySender?
General inquiries: [email protected]. Sales: [email protected]. Website: warmysender.com. Support typically responds within 24 hours on business days.
What are WarmySender's core values?
WarmySender's core values are: Deliverability-First (every feature protects inbox placement), Transparent Pricing (no hidden fees, starting at $14.99/month), and Data Privacy (AES-256-GCM encryption, OAuth 2.0, no data selling).