Reply rate and bounce rate, broken out by mailbox.
Spot the mailboxes that are starting to slip, pull them from rotation, run warmup, and bring them back healthy.
Lambda Group
The per-mailbox signals worth acting on.
See exactly which mailboxes are generating genuine replies, so your best lists can be routed to your best senders.
Track bounce rate at the individual mailbox level to catch reputation problems before they spread into the rest of your campaigns.
Reply and bounce data refreshes continuously, so you're always looking at the current state of every mailbox in your account.
Pull a slipping mailbox from campaigns and run warmup on it; reputation rebuilds through real engagement, with no hidden auto-pause happening behind the scenes.
Signals broken out by mailbox, not blurred into a campaign average.
Reply rate is shown for every mailbox across all your campaigns, so you can see exactly which ones are pulling real engagement and which ones aren't.
Bounce rate is broken out per mailbox rather than just per campaign, so if one mailbox is bouncing more than the others, it stands out right away.
When a mailbox starts looking unhealthy, pull it from your campaigns and run warmup on it. Reputation rebuilds through genuine engagement, and the health dashboard tells you when it's safe to put it back to work.
Per-mailbox reply and bounce rates let you spot the weak links without manually checking every single account every day.
A dropping reply rate or a creeping bounce rate is usually the first sign a mailbox is starting to struggle, and you catch it before the problem spreads further.
See at a glance which client mailboxes are performing and which need attention, without digging through each account one by one.
Why visibility at the mailbox level matters once you scale.
Reply and bounce rate per mailbox, not blended into a campaign average
Most platforms surface aggregate campaign metrics while keeping per-mailbox data hidden, and without that breakdown, there's no way to tell which specific mailboxes are healthy versus which are dragging your overall numbers down. Sendbox exposes reply rate and bounce rate for every individual mailbox, so you're acting on the right signal.
Aggregate numbers hide the real story
Campaign-wide reply and bounce rates blend your healthy mailboxes together with the failing ones, so a mailbox can be sitting deep in spam while the campaign average still looks perfectly fine. Sendbox breaks reply rate and bounce rate out per mailbox instead, showing exactly where the problem lives rather than a number that averages it away.
Protection and recovery happen in warmup
Sendbox won't silently pause a mailbox on your behalf. Instead, when one looks unhealthy, you're the one pulling it from campaigns and running warmup to rebuild engagement and reputation. Recovery actually happens inside warmup, and the health dashboard tells you when to act and when you're clear again.
Got questions? We've got answers.
Still stuck? Talk to us →No. Reply rate and bounce rate are surfaced for every mailbox so that you're the one deciding when to pull it from campaigns. Automatic pausing can end up masking the real issue, whereas visibility lets you act on the signals with the full picture in front of you.
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