Your email reputation determines whether you land in the inbox or the spam folder. Don't wait for a problem to find you — InboxPlease tells you exactly why you're landing in spam and helps you fix it before it damages your reputation.
+ moreInbox placement, sender reputation and the fix — in one dashboard.
InboxPlease diagnoses why your emails land in spam and helps you protect your email reputation. Built for agencies managing multiple client domains and teams protecting business-critical email.
Email deliverability monitoring and recovery platform. Transparent, reviewable AI recovery strategies, real-time blacklist monitoring across 95+ security engines, and cross-provider inbox placement testing.
That means one in five of your messages is invisible to recipients. Lost revenue you never even knew about.
A single listing on a major blacklist triggers a cascade across providers. Recovery is slow and painful.
Google, Microsoft, and iCloud update algorithms constantly. You can't keep up manually.
Connect your mailbox, see where you stand, and let AI handle recovery.
Find out exactly why.
Catch problems before they spread.
Rebuild reputation, safely.
Plug in your stack and your team.
Personalized 10-session recovery strategies. Preview, refine, then let AI run it automatically.
Scanned daily across every major security engine. Know the moment you're blacklisted.
Ask questions, get diagnostics, take action — from a chat interface that knows your reputation.
We don't read your mailbox contents, scan your emails, or embed tracking identifiers in warmup messages. Nothing we do creates a fingerprint that could flag your sending as automated.
We don't recycle the same network of fake accounts. As your reputation builds, you move into pools of better-quality, real mailboxes — making your reputation signals credible to providers like Google and Microsoft.
Our team works in email deliverability every day, not just when there's an incident. When Google or Microsoft change their algorithms, we adapt the platform — you don't need to catch up because we already have.
Built for teams who want transparency and control over their email recovery.
“After the first scan, we discovered our SPF record was misconfigured and two of our sending IPs were on blocklists we didn't even know about. We fixed everything in a day and our open rates jumped from 18% to 37% within three weeks.”
“The monitoring caught 3 blacklistings on secondary domains before they could spread to our main sending domain. Without that early warning, our entire outbound pipeline would have gone to spam during our biggest quarter.”
“Within 2 weeks of starting AI warmup on a brand-new domain, we hit 96% inbox placement. The AI strategy preview showed us exactly what would happen each session, so there were zero surprises. Our onboarding emails actually reach customers now.”
“We manage 40+ client sending domains and used to spend hours manually checking reputation. Now the dashboard flags issues automatically. Last month it caught a DKIM rotation failure at 2 AM that would have tanked deliverability for our largest account.”
| Capability | InboxPlease | Warmup toolsInstantly, Lemwarm, MailReach, Warmy | Seed testersGlockApps, MxToolbox | DMARC platformsEasyDMARC, Valimail | Managed servicesFolderly |
|---|---|---|---|---|---|
| AI warmup with strategy preview before it runs | Included | Warmup, no preview | Not offered | Not offered | Done for you |
| Real-mailbox pools that improve as reputation grows | Included | Shared networks | Not offered | Not offered | Varies |
| Inbox placement tests by provider | Included | Varies | Core feature | Not offered | Included |
| Blacklist monitoring across 95+ engines, daily | Included | Basic checks | Lookups | Not typical | Varies |
| SPF / DKIM / DMARC / MX health with scan history | Included | Not typical | One-off checks | Core feature | Audit |
| DMARC aggregate reporting | Included | Not typical | Varies | Core feature | Not typical |
| AI assistant that takes action in your dashboard | Included | Not typical | Not typical | Not typical | Human consultants |
| MCP server for AI agents | Included | Not typical | Not typical | Not typical | Not typical |
Category comparison based on typical publicly listed capabilities. Verify against each vendor before publishing · Last reviewed: September 2026 · Full comparison →
REST endpoints and MCP tools for inbox placement tests, warmup stats with pause and resume, email analysis, Domain Health and a one-call deliverability overview — in your own apps and AI agents.
# Connect InboxPlease to Claude Code claude mcp add --transport http inboxplease \ https://api.inboxplease.com/mcp \ --header "Authorization: Bearer inp_YOUR_API_KEY"
We send your test email to real mailboxes we operate at each provider and record where it lands. Results stream in live as each mailbox reports.
We resolve the DNS records providers use to trust your mail and evaluate them against published standards. Every finding links to the record it came from.
Your domains and sending IPs are checked across 95+ security engines and blocklists, so a new listing surfaces the day it happens.
Once your reporting address is verified, mailbox providers' aggregate reports are collected and summarised by source and result.
Find answers to common questions about email reputation protection and how we help businesses maintain professional communication standards.
Can't find what you're looking for? Reach out to our team
Our AI analyzes your domain's current reputation and generates a personalized 10-session warmup strategy. You can preview the plan, give feedback, and the AI refines it before execution. Once approved, it sends emails automatically using human-like patterns with randomized timing and 2-hour send windows.
We support Google Workspace, Microsoft 365, iCloud, and any IMAP-compatible email provider. Connection uses secure OAuth — we never ask for or store your password. Setup takes about 30 seconds.
Yes. The free plan includes 1 mailbox and 5 scans per month. Every new account also gets a 14-day free trial of the Pro plan with full access to AI warmup, blacklist monitoring, and the AI assistant. No credit card required.
Each warmup strategy consists of 10 sessions, typically completing in about 10 days. The AI adjusts the pace based on your domain's response and reputation signals. Most users see measurable improvement within the first week.
Absolutely. We are GDPR-compliant with all data stored on European servers. We use send-only access to your mailbox — we never read your emails. All connections use OAuth with industry-standard encryption.
Three things: AI-generated strategies (not generic templates), a feedback loop where you review and refine before execution, and 95+ security engine monitoring — not the 10-20 blacklists most tools check. Our AI assistant can also diagnose issues and take action directly in your dashboard.
No. We do not guarantee deliverability results. Any tool claiming a guaranteed inbox rate is misleading customers — deliverability is determined by mailbox providers based on signals the sender controls. Our value is transparency: we show you exactly what we recommend and why, so you can verify every action.
No. InboxPlease is built for agencies managing multiple client domains and teams protecting business-critical email — SaaS, ecommerce, professional services and more. Designed for senders protecting long-term domain reputation—not disposable-domain sending strategies.
Domain Health checks the DNS records mailbox providers use to trust your mail — SPF, DKIM, DMARC and MX — and reports each finding with the evidence behind it. Scans re-run on a schedule and every result is kept in your scan history.
Yes. On Enterprise, the InboxPlease MCP server lets Claude, ChatGPT and other MCP clients get a deliverability overview, read Domain Health results and scan history, monitor warmup and pause or resume it, run inbox placement tests, analyse emails, run domain analysis, domain profiles, reputation scores and SEO/GEO checks, and check connected mailboxes, all with a scoped API key. Actions need opt-in scopes on an owner/admin key, and the agent confirms with you first. Sending is opt-in, previewed first and audited.
Yes. Pro supports 3 domains and 5 team members; Enterprise includes unlimited domains and team members. Organizations and member invitations keep each client's domains and mailboxes separate.
Run a free placement test. See which providers are junking you. Get an AI recovery plan — no credit card, no commitment.
