HotHawk vs Mailivery
Mailivery is a standalone warmup engine, one of the two that power Woodpecker, priced flat by volume across unlimited mailboxes. HotHawk warms only real Google and Microsoft inboxes, built into the platform that sends.
Choose HotHawk if
You sell to people on Google and Microsoft, and you want warmup, sending and reply management in one platform rather than a warmup engine bolted under a separate sender.
Choose Mailivery if
You need an embeddable warmup API, or flat volume pricing across a lot of mixed inboxes, and a separate sender already covers the rest of your stack.
Last updated June 2026
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Side by side
HotHawk and Mailivery, line by line.
We win on a disclosed Google and Microsoft pool and on everything around the warmup, the sender and the reply inbox. Mailivery wins on its embeddable API and flat volume pricing. The detail sits below.
| Feature | HotHawk | Mailivery |
|---|---|---|
| Warmup pool | ||
| Warmup pool type | Real Google and Microsoft inboxes only | Mixed P2P network, Gmail, Yahoo and more |
| Restricted to Google and Microsoft | No, mixed providers | |
| Pool size disclosed and verifiable | 50,000+, disclosed | Vendor claims 100K+, disputed to ~30k |
| AI-varied warmup content | ||
| Daily warmup volume | Per mailbox, no shared cap | Shared pool (200/day Starter), 250 cap per inbox |
| Reputation protection | ||
| Mailbox quarantine + instant bounce suspension | Spam rescue, no auto-quarantine | |
| Platform | ||
| Warmup inside a full sender | No, standalone (powers Woodpecker) | |
| Master Inbox for replies + team routing | ||
| White-label client portal | ClientBox, included on Scale | |
| Embeddable warmup API | Yes, a core product | |
| Pricing | ||
| Pricing model | Flat, metered on send volume | Flat by daily warmup volume |
| Mailboxes on paid plans | Effectively unlimited | Unlimited |
| Starting price | $97/mo all-in | $29/mo (200/day, 2 users) |
Comparison based on publicly available information from mailivery.io, woodpecker.co and hothawk.ai, accurate as of June 2026. Mailivery bills by daily warmup volume with unlimited mailboxes; figures shown are monthly billing, 25% off annual. Mailivery powers warmup inside Woodpecker alongside Warmy. Pool sizes are vendor-stated and not independently audited: Mailivery’s 100K+ figure is disputed down to around 30,000 by a competitor, so we do not present it as fact. "Not documented" means a feature is not confirmed in Mailivery’s public material. Mailivery and Woodpecker are trademarks of their respective owners; HotHawk is not affiliated with or endorsed by either.
Where HotHawk wins
Warmup built into the sender.
Mailivery is the warmup layer a sender like Woodpecker runs on top of. HotHawk is the sender, and the warmup is built to a tighter spec because it lives inside the tool that does the sending.
Two providers you can name
Our pool is real Google and Microsoft inboxes, more than 50,000 of them, and we tell you that to your face. Mailivery runs a mixed peer-to-peer network across Gmail, Yahoo and others, and its headline number, 100K-plus, is the vendor’s own and has been disputed down to roughly 30,000 by a rival. We would rather be straight about a smaller, focused pool than quote a big number nobody can check.
A ceiling per mailbox
HotHawk warms each mailbox to its own daily limit. Mailivery shares one daily volume across every connected inbox, capped at 250 a day each, so on the $29 plan a fleet of mailboxes splits 200 a day between them and warms thin once you are past five or six.
Bad mailboxes pulled straight out
A risky inbox is quarantined and lifted out of the pool, and any mailbox that starts bouncing is suspended on the spot, so one bad account does not drag the rest of your sending down. Mailivery cleans its network and runs spam rescue, but it does not document quarantine of the mailboxes you connect.
One platform, one bill
Warmup, the sender, the Master Inbox, the API and the MCP server are all in at $97 a month. With Mailivery you are buying a warmup engine and then a separate sender to run it under, which is exactly how Woodpecker uses it.
Where HotHawk wins
The best Master Inbox in cold email.
Warmup gets your mailboxes ready to send. It does nothing with the replies that come back. That is the part HotHawk is built around, and a standalone engine like Mailivery does not go near it.
Every reply gets caught
It connects to your real mailboxes and pulls in the forwarded replies, the CC’d colleagues, the out-of-office notices and the people who answer from an address you never wrote to. A warmup engine has no reply inbox at all, so none of that exists in Mailivery.
Each one gets an owner
Round robin shares new replies evenly across the team, and mailbox groups route them by the inbox they arrived on, the second they land. Nothing waits unassigned while a warm lead goes quiet.
A My Inbox per rep
Give every rep a view of just their own replies, or run one shared team inbox. You set who sees what, and managers keep the whole picture either way.
The keen ones rise first
Replies are tagged positive, negative and out of office for you, so the people who actually want to talk are the ones your team works before anyone else.
Where Mailivery wins
Warmup you can build into your own product.
Here is the honest one. Mailivery is a warmup engine you can embed, not only a tool you log into. Its REST API lets you connect mailboxes, start and pause warmup, adjust volume and catch webhooks, which is how it ends up inside platforms like Woodpecker. If you are building a product that needs warmup under the bonnet, or you want flat pricing across a broad mix of providers, that is genuinely what Mailivery is for, and HotHawk does not compete on it.
HotHawk is the other shape of thing: a full sending platform you use, not an engine you embed. Warmup is in the box, but so is the sender, the Master Inbox and ClientBox. If you want an API to power warmup elsewhere, Mailivery is the right buy, and we would point you to it.
The verdict
Which one fits you?
Pick HotHawk
For warmup on a disclosed pool of real Google and Microsoft inboxes, native to a sender with the Master Inbox and ClientBox, when you want the whole workflow in one platform.
Pick Mailivery
For an embeddable warmup API, or flat volume pricing across a lot of mixed inboxes, when a separate sender already covers the rest of what you need.
FAQ
HotHawk vs Mailivery questions.
Is Mailivery the same as Woodpecker’s warmup?
In effect, often yes. Mailivery is one of the two warmup engines built into Woodpecker, the other being Warmy, so when Woodpecker warms your mailboxes it can be running on Mailivery underneath. That is why comparing HotHawk to Woodpecker’s warmup is largely comparing it to Mailivery, and why this page covers the engine itself.
How does Mailivery pricing work?
Mailivery charges by daily warmup volume rather than per inbox, and connects unlimited mailboxes. Starters is around $29 a month for 200 warmup emails a day and up to two users, Professional around $79 for 800 a day, and Business around $199 for 2,500 a day, with 25% off on annual billing and a per-inbox cap of 250 a day. That flat, unlimited-mailbox model is genuinely good value for light warmup on a budget. The catch is that the daily volume is shared across every mailbox, so the $29 plan still only warms 200 a day however many you connect, which thins out fast past five or six inboxes. HotHawk does not try to undercut it on price, and warms each mailbox to its own limit instead.
Is the Mailivery 100,000 mailbox network real?
Treat it as unverified. The 100K-plus figure is Mailivery’s own claim, and a competitor, Warmy, says the network is closer to 30,000. Nobody outside the vendor can audit it. HotHawk discloses a pool of more than 50,000 real Google and Microsoft inboxes, and the point that matters is not the headline number but that ours is restricted to the two providers your B2B prospects actually use.
What is the difference in the warmup pool?
Mailivery warms across a mixed peer-to-peer network spanning Gmail, Yahoo and other providers. HotHawk warms only against real Google and Microsoft inboxes. When your buyers sit on Workspace and Microsoft 365, engagement from those same two providers is the signal that counts, so we keep the pool restricted to them rather than spreading it across consumer mailboxes.
Does Mailivery have a warmup API?
Yes, and it is a real strength. Mailivery sells an embeddable REST API to connect mailboxes, start and pause warmup, adjust volume and fire webhooks, which is how it powers warmup inside other platforms. HotHawk does not sell a standalone warmup API, so if an embeddable warmup engine is what you are after, Mailivery is built for exactly that and is the better pick.
Can I switch from Mailivery or Woodpecker to HotHawk?
Yes. You connect your own mailboxes over OAuth or SMTP, then import your leads and campaigns, so there is nothing to migrate at the infrastructure level. The bigger decision is that you are moving the whole sending workflow into HotHawk, rather than swapping the warmup engine underneath your current sender.
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