WarmySender is a cold email platform that bundles a 200-million-contact B2B lead database, automated mailbox warmup, address verification, and multi-step sequencing into one dashboard. The pitch is straightforward: a perfectly written cold email is worthless if the sending domain is already flagged as spam, so WarmySender tries to solve deliverability and outreach together instead of treating them as separate problems.
Plans start at $14.99 a month for the Pro tier, with Enterprise and Ultimate tiers scaling up sending volume, lead access, and verification credits — and annual billing cuts the monthly rate by more than half.
What is WarmySender?
Founded in January 2025 and based in Dubai, United Arab Emirates, WarmySender is a small team of 1-10 people competing against established players like Hunter.io, Lemlist, and Lusha. Rather than picking one piece of the cold-email stack, the company built lead sourcing, deliverability protection, and sequencing as one product, aimed at consultants, marketing agencies, and sales managers who currently juggle a separate verifier, warmup tool, and sending platform. The core problem it addresses is reputation: cold mailboxes that skip warmup or send to unverified addresses get flagged fast, and WarmySender’s answer is to make warmup and verification mandatory steps built into the same workflow as the campaign itself. The vendor cites 99.4% deliverability on warmed mailboxes as the headline outcome of that approach, positioning the all-in-one bundle as a way to skip paying separately for a warmup service, a verifier, and a sender.
Key features
Sequences and testing
Build multi-step sequences with a visual, drag-and-drop builder and eight conditional branch types, test up to 26 subject-line variants with A-Z testing, and run every draft through a pre-send spam score checker before it goes out.
Deliverability protection
Every mailbox gets automated warmup through what WarmySender calls A.H.D.E. (Authentic Human Deep Engagement), every address is checked through Bounce Shield before entering a sequence — including honest catch-all flagging for Outlook and Yahoo domains — and mailbox rotation with smart pacing protects sender reputation across a campaign.
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Lead sourcing and automation
Build audiences from CSVs, Sales Navigator URLs, or WarmySender’s own 200-million-contact B2B database, connect mailboxes over secure OAuth, and link an MCP-compatible AI agent to build, verify, and launch a sequence from a plain-English prompt. Mailboxes connect over secure OAuth rather than requiring you to hand over raw credentials, which matters once a workspace has dozens of sending accounts attached.
Team and tracking controls
A unified inbox keeps every reply across every mailbox in one place, an analytics dashboard tracks opens, replies, and clicks per sequence, and custom tracking domains keep campaign links on-brand; shared workspaces let teams collaborate without stepping on each other’s sequences.
Plans and pricing
WarmySender has three monthly plans, and switching to annual billing cuts the price by about 55%, with a further discount for 3-year billing. Every plan includes warmup, sequencing, Bounce Shield, and the unified inbox — the differences are mostly about sending volume, lead access, and team size.
| Plan | Price | Billing | Key limits |
|---|---|---|---|
| Pro | $14.99/month | Monthly (from $6.74/mo annual) | 10,000 emails/mo, 2,000 leads/mo, 600 verifications/mo, 50 mailboxes, 2 team members |
| Enterprise (Most Popular) | $69.99/month | Monthly (from $31.49/mo annual) | 100,000 emails/mo, 30,000 leads/mo, 10,000 verifications/mo, 400 mailboxes, 4 team members, API access |
| Ultimate | $199/month | Monthly (from $89.55/mo annual) | 300,000 emails/mo, 60,000 leads/mo, 20,000 verifications/mo, 800 mailboxes, 15 team members, 10 workspaces, API access |
LinkedIn, WhatsApp, and Instagram outreach are available as optional add-ons at $12 per seat per month, or $120 a year.
Who it’s best for — and who should skip it
WarmySender fits consultants, agencies, and sales managers who need to run real volume — the built-in database and warmup make it a reasonable one-stop replacement for separately paying for Hunter.io, a warmup tool, and a sending platform. It’s best suited to teams sending consistent volume rather than occasional, low-volume outreach, since much of the value sits in the deliverability infrastructure, which pays off once you’re sending enough mail for sender reputation to matter. Teams already paying for Salesforce or HubSpot will appreciate the native integrations, since leads and replies can sync back into a CRM they already use instead of living only inside WarmySender.
What users say
WarmySender holds a 4.9-out-of-5 rating from 41 user reviews, with 38 of 41 giving five stars. Reviewers praise the all-in-one combination of warmup, lead database, and Bounce Shield, while some note room to grow in B2B database coverage. One detailed review on the Ultimate plan flagged that only a portion of connectable mailboxes can be warmed at once — a detail worth checking against your own mailbox count, since every new cold mailbox needs warmup before it’s safe to send from. The founder team responds to reviews under the handle Hello_WarmySender and has acknowledged the database-coverage feedback directly.
Price and value
At $14.99 a month for Pro, WarmySender undercuts what a separate warmup tool and a Hunter.io-style verifier would normally cost stacked on top of a sending platform, and annual billing brings that down further to under $7 a month. The Enterprise and Ultimate tiers scale sending volume, lead access, and team seats for agencies running multiple client accounts, and the per-seat add-ons for LinkedIn, WhatsApp, and Instagram outreach let teams expand channels without jumping to a higher core tier.
Verdict
WarmySender bundles lead sourcing, warmup, and verification into one affordably priced platform with a strong buyer track record, and the annual billing discount makes it an easy recommendation for anyone currently paying for separate warmup, verification, and sending tools.
Frequently asked questions
WarmySender's Pro plan starts at $14.99 a month, Enterprise is $69.99 a month, and Ultimate is $199 a month; annual billing cuts those rates by more than half, and 3-year billing cuts them further.
WarmySender's plans are paid from the start; there's no free-forever tier. Choosing monthly billing lets you try a plan before committing to an annual or 3-year rate.
WarmySender bills by subscription, so you can cancel or switch plans directly from your account; check the vendor's terms page for the specifics of its cancellation and refund policy.
Yes. Every plan includes access to a 200-million-contact B2B database, with monthly lead limits that scale by tier from 2,000 on Pro up to 60,000 on Ultimate.
WarmySender combines lead sourcing, mailbox warmup, address verification, and sequencing in one platform, where Hunter.io and Lemlist typically cover only part of that stack, requiring a separate warmup or verification tool.
Pro includes 10,000 emails per month, 2,000 leads per month, 600 verifications per month, and 50 connectable mailboxes, for $14.99 a month.
Yes. Switching from monthly to annual billing cuts the price by about 55%, and 3-year billing cuts it further, to roughly 70% off the monthly rate.
