Inbox rotation forcold email at scale.
Inbox rotation spreads your cold email across all your connected mailboxes for you, so no single account sends too much too fast and you can scale volume without burning your mailboxes and domains.
No credit card required.
Trusted by some of the world's top go-to-market teams
Sending now
Spread evenly across your mailboxes
The basics
What is inbox rotation?
Inbox rotation is a clean name for a simple idea: instead of sending every cold email from one mailbox, you send across many. Each campaign is shared and paced across all your connected inboxes, so your sending stays steady and no single account carries the load.
HotHawk does this automatically across every mailbox you connect, whether Google, Microsoft or SMTP. Paired with built-in warmup, it is one of the simplest ways to protect your domain reputation as you grow.
Your campaign
80 cold emails, queued
Built to scale
Scale your sending safely.
The more you send, the more rotation matters. We spread the load so your domains stay healthy as your volume grows.
Connect unlimited mailboxes.
Add as many Google, Microsoft or SMTP sending accounts as you like, with no per-inbox fees. Scale by adding mailboxes, not by pushing each one harder.
Sends rotate automatically.
Every campaign is shared and paced across all your mailboxes for you, so no single account sends too much too fast and your sending stays natural.
Your reputation stays protected.
Sending runs on rotating IPs, with dedicated IPs and isolated infrastructure when you scale, so one busy mailbox never drags the rest down.
How it works
How rotation works with your campaigns.
You build the campaign once. We handle how it goes out.
Connect every mailbox you send from.
Add Google Workspace, Microsoft 365 or any SMTP account in a click, or import them in bulk with our custom upload apps, and connect as many as you want. No per-inbox fees, so adding capacity is just adding mailboxes.
Build your cold email campaign once.
Lay out your multi-step campaign in the sequencer: the steps, the timing, the follow-ups and your A/Z variants. You design it once and it is ready to send.
Assign mailboxes and set daily send limits.
Choose which mailboxes a campaign sends from and set a daily limit for each one, so every account stays inside safe sending volumes.
We automatically rotate sends across selected mailboxes.
HotHawk shares and paces each campaign across the mailboxes you assigned, so the load is spread evenly and no single account sends too much too fast.
Monitor volume and adjust limits easily.
Watch how much each mailbox is sending and how much headroom is left, then dial daily limits up or down in a click as your domains warm up.
The bigger picture
Inbox rotation is one of many factors in a successful cold email engine.
Strong cold email is never just one feature. It is your mailbox infrastructure, your warmup, your inbox rotation, your sequencer and your A/Z testing all pulling in the same direction. HotHawk brings them into one platform, so every campaign you build sends across your rotated mailboxes with the rest handled for you.
Explore the cold email sequencer- Reliable mailbox infrastructure
- Built-in email warmup
- Automatic inbox rotation
- A multi-step cold email sequencer
- A/Z variant testing
Use cases
Who is our cold email sequencer built for?
Inbox rotation FAQs
What is inbox rotation?
Inbox rotation spreads your cold email sends across multiple mailboxes instead of one, so no single account sends too much too fast. It keeps your sending natural and protects your domain reputation as you scale volume.
How many mailboxes can I connect?
As many as you want. There are no per-inbox fees, so you scale your sending by adding mailboxes rather than paying more per account.
Does inbox rotation protect my domain reputation?
Yes. By sharing volume across accounts and pacing each one, rotation stops any single mailbox from spiking, which is one of the fastest ways to hurt reputation. Paired with warmup, it keeps your domains healthy as you grow.
Does inbox rotation work with all my campaigns?
Yes. Every campaign you build in the cold email sequencer sends across your connected mailboxes automatically, so rotation is on by default with no extra setup.
Can I connect any email provider?
Connect Google Workspace or Microsoft 365 in one click via OAuth, or any provider over SMTP and IMAP, including third-party sending infrastructure. Your email goes out over your own mailboxes, not ours.
Do I need dedicated IPs?
Most senders do well on our shared infrastructure with rotating IPs. If you are sending serious volume, dedicated IPs and isolated infrastructure are available so your sending environment is yours alone.
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.