Domains at cost.
Bought through Sellbird with your approval. You see the price before it is charged.
Sellbird runs the infrastructure cold email needs: secondary domains, Google Workspace and Microsoft 365 inboxes, warmup, DNS records and a send schedule that spreads volume across inboxes inside safe limits. Your agent can ask for more capacity; you approve anything that costs money.

3 domains · 120 emails a day at full ramp
| Inbox | Status | Warmup | Sent today | Inbox rate | Health |
|---|---|---|---|---|---|
[email protected]Google Workspace | Sending | Done · 34 days | 28/30 | 98% | Healthy 97 |
[email protected]Google Workspace | Warming | Day 12 of 21 | – | 99% | Healthy 91 |
[email protected]Microsoft 365 | Warming | Day 9 of 21 | – | 96% | Healthy 90 |
[email protected]Microsoft 365 | Paused | Done · 34 days | 0/30 | 84% | At risk 71 |
[email protected]Google Workspace | Sending | Done · 34 days | 26/30 | 97% | Healthy 96 |
[email protected]Microsoft 365 | Sending | Done · 29 days | 20/30 | 95% | Healthy 93 |
Warmup progress, sent today against the inbox's cap and a health score for every mailbox. When bounces climb, sending pauses before it hurts the rest.
Bought through Sellbird with your approval. You see the price before it is charged.
SPF, DKIM, DMARC and MX checked for every domain, and fixed on Cloudflare or GoDaddy when you say so.
Every inbox Sellbird runs warms before it sends and keeps warming after.
Sending pauses itself before a workspace's bounce rate passes the limit you set.
Fewer than most people expect. Sellbird keeps every inbox well under the volume providers flag, ramps new inboxes up during warmup and spreads your daily volume across several inboxes and domains.
Usually two to four weeks for a new inbox, depending on the provider and its history. Warmup is included for inboxes Sellbird runs. No warmup can guarantee inbox placement.
We recommend one. A secondary sending domain keeps your main domain’s reputation out of it. Sellbird can buy one for you at cost, and only with your approval.
Google Workspace and Microsoft 365. Connect your organisation once with a short admin step, then add new inboxes or bring the ones you have.
Sellbird checks SPF, DKIM, DMARC and MX for every sending domain and shows what to fix. On supported DNS providers it can fix the records for you once you approve the change.
Request early access. Start with the inboxes you have and add warm ones when you are ready.