Warmy
AI-driven email warmup and deliverability tool that lands cold outbound in the primary inbox, not spam.
RecommendedLast reviewed July 17, 2026
What Warmy actually is.
Warmy is a standalone email warmup and deliverability tool, not a sender. You connect a mailbox, and it trades automated messages with a network of real inboxes so a new or cooling domain looks active and trustworthy before cold outreach hits it. Two networks, really. A B2B track built around business mailboxes, aimed at inboxes like Google Workspace and Microsoft 365, and a B2C track built around consumer mailboxes, aimed at Gmail and Yahoo. An AI layer, branded Adeline, tunes send volume and message topics, and reports domain and IP reputation back through Google Postmaster data.
It only does one job: warmup and deliverability monitoring, not sequence building or sending, so you'd run it next to whatever tool actually sends your mail. But connecting a mailbox is quick, about 25 seconds by Warmy's own account; the reputation itself still builds over weeks, not minutes. And one thing worth flagging: the homepage claims 35,000-plus businesses in one stat block and 'over 7,000' in a testimonials header a few sections down. Doesn't mean the product doesn't work, but it's the kind of inconsistency that makes the rest of the page's numbers harder to take at face value.
What it does
- Runs automated warmup by exchanging emails with a network of real mailboxes, not bots.
- Splits warmup into a B2B network and a B2C network, matched to who you're emailing.
- Auto-archives its own warmup messages so your inbox doesn't fill with noise.
- Personalizes each warmup message and lets you pick a topic to warm around.
- Pulls Google Postmaster data into the dashboard for domain and IP reputation.
- Tracks SPF, DKIM, DMARC, and mailbox health as safety checks, not just warmup stats.
- Sends warmup traffic in 30+ languages, useful outside English-speaking markets.
Where it sits in the pipeline.
- AI & Intelligence
- Data & Enrichment
- Scraping & Custom Data
- Email Infrastructure & Deliverability
- Outreach & Sending
- LinkedIn & Multichannel
- Signals & Intent
- Calls & Meetings
- CRM & Pipeline Ops
Runs well with
The tools we'd run next to Warmy, and what each pairing covers.
Pricing, without the fiction.
Warmy's pricing page doesn't publish itemized tier amounts; it shows a B2B track, a B2C track, and a Custom plan, all described as "volume based pricing" tied to mailbox count and sending volume, with Google Postmaster integration and a dedicated deliverability expert on every plan. The Custom plan adds a dedicated customer success manager for larger programs. Every track offers a 7-day trial with no credit card required and cancel-anytime terms. In practice, cost pressure comes from mailbox count and volume rather than feature gating, so an agency adding client mailboxes should expect the bill to climb with each one added rather than hitting a hard feature wall.
Choose it, or skip it.
Choose it if
- Agencies running warmup across several client mailboxes get volume-based mailbox pricing without a big platform commitment, though the exact rate takes a sales call to pin down rather than a published rate card.
- Teams standing up new sending domains want automatic warmup that needs little daily tuning before cold outreach starts.
- Senders who want Google Postmaster Tools data and a deliverability monitor without building that reporting layer themselves.
- Anyone testing cold email wants the 7-day trial with no card before committing spend to a warmup tool.
Skip it if
- Teams already on a sending platform with warmup bundled in (Instantly, Maildoso) don't need a separate warmup subscription.
- Anyone building agent or API-driven workflows should look elsewhere for self-serve access; Warmy does list a developer API, but getting a key requires a sales call, and it's built for embedding warmup into your own product, not for wiring into an existing automation stack.
- High-volume senders who want per-mailbox cost locked in upfront will find Warmy's pricing page quotes volume-based, not itemized.
If not Warmy, then what.
- MailReachfrom $19.50/mailbox/mo (All-In-One warmup plan); separate pay-as-you-go spam-test credits; 20% off annual billing
Pick MailReach for a narrowly-focused warmup-and-spam-testing tool with a similar dashboard model.
- Instantlyfrom ~$37-47/mo (Growth/Starter plan, billed monthly or annually); modular add-ons (leads, CRM) push real cost to $100-4
Pick Instantly instead if warmup bundled with the sending platform itself is enough and a separate tool feels redundant.
- Maildosofrom $0.49/mailbox in bulk; typical entry ~$75/mo for 30 mailboxes ($2.50 each)
Pick Maildoso when the real need is pre-warmed mailboxes from day one, not warming up domains you already own.
Asked in real client work.
What does Warmy actually do?
It warms up sending domains and IPs by running automated inbox activity (opens, replies, moving mail out of spam) across a network of mailboxes, so a new or cooling domain builds sender reputation before real cold outreach hits it. It also reports deliverability metrics like inbox placement and domain reputation through a dashboard, with a Google Postmaster Tools integration.
Does Warmy work for both B2B and B2C senders?
Yes. Warmy splits its plans into a B2B track that warms up against a network of business mailboxes and a B2C track using consumer mailboxes, plus a custom plan with a dedicated customer success manager for larger volume. The mechanics are the same warmup and monitoring, just aimed at different mailbox networks.
Is there a free trial?
Yes, a 7-day trial with no credit card required, and you can cancel anytime. That's enough to see whether a domain's placement moves before paying, though it's a short window to judge a process that typically takes weeks to fully build reputation.
Can Warmy replace a sending tool like SmartLead or QuickMail?
No. Warmy only handles warmup and deliverability monitoring, not sequence building, sending, or reply management. It runs alongside a sending platform rather than instead of one, warming the mailboxes that tool actually sends from.
Is there an API for connecting Warmy into an agent workflow?
Warmy lists a developer API on its site (the Warmy API page under Integrations), but it's pitched at embedding warmup into your own product, not at calling it from an outside workflow. Getting a key means booking a call rather than generating one from account settings, so it isn't the kind of self-serve endpoint you'd drop into an agent or orchestration stack.