Sequences built to land in the inbox,not the spam folder.
Each account gets its own dedicated IP, its own fully separated sending environment, and a warmup engine that outpaces what other platforms offer. Built for agencies and go-to-market teams who treat the primary inbox as the only acceptable outcome.
Everything your outbound team needs, under one roof.
Campaigns
Campaign | Status | Leads | Sent | Opened | Replied | Positive | Bounced | |
|---|---|---|---|---|---|---|---|---|
SaaS VP Decision Makers | Active | 4,200 | 2,847 | 1,748(61.4%) | 236(8.3%) | 92(39.0%) | 51(1.8%) | |
Series A Founders – West Coast | Active | 1,800 | 1,204 | 784(65.1%) | 133(11.0%) | 61(45.9%) | 19(1.6%) | |
Agency Owners Outreach | Paused | 5,600 | 3,891 | 2,218(57.0%) | 214(5.5%) | 72(33.6%) | 82(2.1%) | |
Enterprise IT Directors | Completed | 7,100 | 5,102 | 3,265(64.0%) | 453(8.9%) | 176(38.8%) | 92(1.8%) | |
RevOps Teams Q1 2025 | Draft | 920 | - | - | - | - | - |
If it doesn't help you land in the inbox, it's not here.
Each plan ships with a dedicated IP running inside its own isolated sending environment.
Sign up and you're already sending live campaigns within 15 minutes.
Warmup, validation, and inbox placement testing all run without caps.
Replies get drafted and tagged automatically as they arrive, freeing your team to focus on leads worth chasing.
Issues get caught and flagged early, before they can put a dent in your sender reputation.
Bounce and reply rates are tracked mailbox by mailbox, so a struggling account never stays hidden for long.
Blacklist status and inbox placement get rechecked continuously, not just once during setup.
Warmup, validation, ESP matching, and A/B testing all sit inside a single platform.
Plenty of outreach platforms lump every customer onto identical IPs and one shared reputation. Sendbox's isolated infrastructure means your IP and your sender reputation belong to nobody but you. Add per-mailbox health visibility on top, and a mailbox in trouble gets caught before it pulls the rest of your sending down with it.
Start nowThat's how long it takes to go from a brand-new account to a campaign that's actually sending, with no onboarding call required.
Every account operates on its own IP within its own sending environment, keeping your sender reputation fully in your hands.
The infrastructure serious outbound teams actually need.
A dedicated IP comes standard on every Sendbox plan
Each account gets assigned its own IP inside a fully isolated sending environment. What other senders do has zero effect on you — your reputation is yours and yours alone.
Sending that matches the recipient's ESP
We automatically detect which inbox provider each lead uses and route the message through a matching mailbox — Gmail reaches Gmail, Outlook reaches Outlook — lifting inbox placement without you lifting a finger.
A warmup engine built to slip past the detectors
Sending times shift naturally, engagement mimics a real person, and every interaction traces back to an actual account. Mailbox providers have gotten sharp at catching automated warmup, so this one was built specifically to fly under that radar.
No feature here is throttled
Whichever plan you're on, every deliverability feature runs with no cap on how much you can use it.
Replies drafted and tagged by AI
As soon as a lead writes back, AI drafts a response and tags what came in — interested, not now, wrong person, unsubscribe — so all you have to do is review and hit send.
Sending at full speed from day one
Every mailbox operates at its true sending capacity right away — no artificial slowdown, no shared queue holding you back.
A/B testing that manages itself
Underperforming variants get shut off on their own while the winning ones pick up more volume — no one needs to sit there watching the test.
Room to grow, built in from the first mailbox
Every tier runs on the same dedicated infrastructure — pick the one sized for your team, not a stripped-down version of it.
Choose a plan
Essential
Plus
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Power
* "Unlimited" is capped by a generous fair-use limit, not a marketing word with no meaning — the exact thresholds live in our Fair Usage Policy.
** Phone numbers and call minutes are charged separately from your plan
Questions people usually have before they sign up
Sendbox is cold email infrastructure where every account gets its own dedicated IP and a completely isolated sending environment. Connect your mailboxes, bring in your leads, build out your sequences, and Sendbox takes care of deliverability behind the scenes, warmup, validation, bounce tracking, and inbox placement included. The result is emails that land in primary rather than getting buried in spam.
Ready to land in primary?
Get your own isolated Sendbox setup running and start sending inside 15 minutes.
Every plan includes a dedicated IP. Cancel whenever you want.