Email warmup toolthat builds real reputation.
A warmup pool of over 50,000 real Google and Microsoft inboxes, no IMAP or SMTP. Build your sender reputation without warmup tags.
No credit card required.
Trusted by some of the world's top go-to-market teams
The basics
What is an email warmup tool?
An email warmup tool gradually builds the sending reputation of a mailbox by exchanging genuine email with other real inboxes. It teaches Google, Microsoft and the rest that your account is trustworthy, which is one of the biggest factors in whether your cold email reaches the inbox.
HotHawk's warmup is built in and runs on its own, against a pool of real Google and Microsoft inboxes only. No SMTP accounts, no bots, so the reputation you build is real and no bad actor in the pool can drag it down.
Warmup volume
Reputation healthyThe pool
A warmup pool your mailboxes are happy to be in.
Warmup only works if the inboxes you engage with are trusted. That is why we only allow real Google and Microsoft mailboxes in our pool.
50,000+
mailboxes already warming up in the pool
Join a base of senders who take deliverability as seriously as you do.
Detailed AI conversations
We use AI to hold genuine, business-relevant conversations between mailboxes in the pool, across a huge range of topics. Every exchange reads like real email between real people, so the reputation you build is the real thing.
Built to protect you
A pool that protects your reputation.
Shared warmup is only as good as its worst sender. We keep the bad ones out, automatically.
Optional warmup identifier
Some tools tag warmup emails with an identifier like 'XGDR4T'. With HotHawk it is your call whether to use one, and either way we filter warmup out of your inbox for you.
Mailbox quarantine
If a mailbox starts to look like a risk, we quarantine it away from the pool before it can affect anyone else.
Bad actors suspended instantly
The moment a mailbox starts triggering bounces it is suspended from the pool, so one bad sender never drags your reputation down.
Set daily send and reply limits
Choose the daily send and reply limits for each mailbox, so warmup paces itself the way you want it to.
Use cases
Who is our cold email sequencer built for?
Email warmup FAQs
What is an email warmup tool?
An email warmup tool gradually builds the sending reputation of a mailbox by exchanging genuine email with other real inboxes. It teaches Google and Microsoft that your account is trustworthy, which is one of the biggest factors in whether your cold email reaches the inbox.
What makes HotHawk's warmup different?
The pool and how we protect it. We warm up against real Google and Microsoft mailboxes only, never custom IMAP or SMTP, with 50,000+ mailboxes already connected. Risky mailboxes are quarantined and any mailbox that starts bouncing is suspended instantly, so no bad actor drags your reputation down.
Do I have to use a warmup identifier?
No. Some tools require a warmup tag like 'XGDR4T' so inbox tools can spot warmup email. With HotHawk it is optional, and whether you use one or not, we automatically filter warmup out of your inbox for you.
Can I control how much it sends?
Yes. Set the daily send and reply limits for each mailbox and warmup paces itself to match, ramping a fresh account gently and holding established ones steady.
Is warmup included or an extra cost?
It is built into HotHawk on every plan, so there is no separate warmup tool to buy or wire up. Connect a mailbox and it just works.
How long does warmup take?
It depends on the mailbox and provider, but warmup ramps gently over the first weeks and then keeps running in the background to maintain reputation. You do not need to babysit it.
Send cold emails that get delivered.Never miss a positive reply.
Serious deliverability paired with the best reply management in the market.
No credit card required.