Starter
Perfect for getting started
$99/month
Get started- Up to 5 mailboxes
- Pre-send verification
- Spam content scanning
- Placement tests
- Email support
Deliverability layer · v4.2
Stop burning
your mailboxes.
InboxShield sits between your sequencer and the world — verifying, screening, and routing every send so your Google, Microsoft, Azure, and SMTP mailboxes survive cold outreach instead of getting torched.
// compatible with
Google WorkspaceMicrosoft 365AzureIMAP / SMTP95%
Fewer bounces
3×
Inbox rate
5×
Mailbox lifespan
shield.live ▸ outbound
Sequencer
instantly
Shield
screening
Mailbox
ready
live loglast 4 events
- PASSalex@acme.ioverified · routed
- BLOCKnoreply@xyz.comspam token: 'FREE!!'
- PASSsarah@globex.coverified · warmup
- SKIPj@mimecast-protected.comSEG · skipped
// inbox providers
Plugs into any inbox provider.
Whatever mailboxes you're running, InboxShield sits on top and protects them all.
// protection stack
Every layer of defense
your mailboxes need.
Cold outreach at scale isn't a content problem. It's an infrastructure problem. InboxShield is the infrastructure.
Pre-send verification
Ping before you send.
We touch the destination mailbox before your message leaves. Invalid? Blocked at the gate. Bounce rate stays clean. Reputation stays intact.
Content scanning
Spam tokens, killed in flight.
Every email screened for trigger phrases and risky patterns — rejected before it leaves your mailbox, not after it lands in spam.
SEG protection
Auto-skip the gatekeepers.
Proofpoint, Mimecast, and other secure gateways get bypassed by default. Stay off the strictest filters' radar — unless you tell us otherwise.
Hardened DNS
Infrastructure that doesn't flinch.
Domains routed through Google DNS with secured forwarding. A sending foundation built to absorb load without leaking signal.
Placement tests
Know the folder before you scale.
See inbox vs. spam placement across providers — before you commit a campaign and find out the hard way.
Premium warmup
Warmup that reads like real life.
Industry-specific warmup profiles that mimic actual conversations, not generic noise. Your sender reputation, accrued honestly.
// pipeline
Connect → Screen → Send safely.
Three steps. Zero config theater. From signed-up to protected before your next campaign.
- 01
Connect
Plug in your existing mailboxes — Google, Microsoft, Azure, SMTP. No migration, no DNS surgery. Minutes, not days.
- 02
Screen
Every outbound email flows through the protection layer. Verified, scanned, classified, routed — in milliseconds.
- 03
Send safely
Only valid, clean, deliverable messages leave the building. The rest get caught here — not by spam filters.
// measurable impact
Fewer bounces.
Protected reputation.
Mailboxes that last.
Numbers from real customers running real volume. Not "up to" — actual median lift across the network.
95%
Fewer bounces
reduction in bounce rate
100%
Protected reputation
spam screening coverage
3×
Higher rates
better inbox placement
5×
Longer lifespan
extended mailbox longevity
// sequencers
Connects to the tools you already send with.
Protects your sends no matter which sequencer powers your campaigns.
- Instantly
- Smartlead
- EmailBison
- Salesforge
- + more
Don't see yours? New integrations ship weekly.
// pricing
Simple. Transparent.
Pick the plan that fits your sending volume. Cancel anytime — though once you see your bounce rate, you won't.
Growth
Most popular for scaling teams
$299/month
Get started- Up to 25 mailboxes
- Everything in Starter
- SEG protection
- Premium warmup profiles
- Secured DNS & forwarding
- Priority support
Scale
Enterprise-grade protection
$799/month
Get started- Unlimited mailboxes
- Everything in Growth
- Custom warmup profiles
- Dedicated account manager
- White-glove onboarding
- 24/7 support
// book a demo
See InboxShield in action.
Pick a time. 20 minutes. We'll walk through the protection layer on a live mailbox.
Your mailboxes are an asset.
Defend them.
Stop losing mailboxes to poor deliverability. Start protecting them with InboxShield.
Protect my mailboxes