Cold email infrastructure built for agencies
Run outbound for every client from one account, with each client in its own workspace on dedicated IPs and isolated sending infrastructure. One client's risky list cannot hurt another client's results, mailboxes are unlimited, and white label starts on the Pro plan, so adding clients grows your margin instead of your tool bill.
For Agencies
Solutions
Give each client a workspace
Create a workspace per client, connect their mailboxes and domains, and import their leads from CSV with validation on the way in. Workspaces scale from 3 on Plus to 25 on Agency and unlimited on Power.
- Isolation per client
- White label from Pro
- Unlimited mailboxes
- Deliverability tools included
Add clients without adding risk
Isolation per client
Dedicated IPs and isolated sending infrastructure, so one client's sending cannot hurt another's.
White label from Pro
Your brand in front of clients, with custom branded reports on Agency and Power.
Unlimited mailboxes
Connect as many mailboxes per client as the work needs, with no per-seat charges.
Deliverability tools included
Warmup, validation, inbox placement tests and blacklist monitoring on every plan.
Step 1
Give each client a workspace
Create a workspace per client, connect their mailboxes and domains, and import their leads from CSV with validation on the way in. Workspaces scale from 3 on Plus to 25 on Agency and unlimited on Power.
Step 2
Launch campaigns in isolation
Each client's campaigns send over infrastructure that is separate from every other customer. Warmup, DNS checks and blacklist monitoring run for every client automatically.
Step 3
Report under your brand
White label is available from the Pro plan. The Agency and Power plans add custom branded reports and a dedicated account manager.
Who it’s for
Lead generation agencies
Keep every client's sending reputation separate, so a problem with one client's list stays with that client instead of spreading across your roster.
Sales outsourcing firms
Run SDR work for several clients from one login. The unified inbox and AI reply tagging make it quick to see which client has interested replies waiting.
Growth consultancies
Set up outbound for a client, push replies into their CRM with signed webhooks, and hand over branded results without building reports by hand.
Why isolation matters more for agencies
Separate workspaces are not the same as separate infrastructure
Many tools give agencies a workspace per client while every client still sends over shared infrastructure. Sendbox puts every account on dedicated IPs and isolated infrastructure, so client separation goes all the way down to the sending layer.
White label and branded reporting
White label is included from the Pro plan.
- Agency and Power add custom branded reports and a dedicated account manager, so client reporting becomes part of the platform instead of a weekly spreadsheet job.
Costs that do not grow per seat
Sendbox is priced by plan, not by user or by mailbox.
- Add teammates and mailboxes as client work grows without a new line item each time.
White label starts on Pro, which includes 500,000 emails a month and 10 workspaces. Agency adds 2,500,000 emails, 25 workspaces, custom branded reports and a dedicated account manager. Power raises the limits further. Pricing is quoted per plan, see the pricing page.
Ready to land in primary?
Dedicated IPs, isolated infrastructure, and automatic warmup on every plan. Set up on your own, no sales call, and pay for sending volume, not seats.
Every plan includes dedicated IPs. No per-seat fees. Cancel whenever you want.
