Inboxsy.io
Cold Email Is Broken
Inboxsy Fixes It
Since February 2024, Google and Microsoft have been blocking more cold email than ever.
In fact, 60 percent never even makes it to the inbox.
Inboxsy checks 53 hidden signals these platforms use to decide what gets delivered and tells you exactly what to fix so your emails get through.
Get Inboxsy and Start Sending with Confidence
Why Your Cold Emails Aren’t Getting Replies
Even great writing fails if your emails aren’t seen. Today’s mailbox providers rank every email on trust, domain reputation, and past engagement, and filter out everything else.
Inboxsy tells you precisely where you're leaking trust, which signals hurt your reputation, and what moves boost your inbox placement. No guesswork, just real data.
What Inboxsy Does for You
Score Tracking
Every day, Inboxsy scores your email setup using 53 hidden signals across trust, reputation, and engagement. It’s like a health check for your entire sending operation.
Inbox Placement
We track exactly where your emails land, Inbox, Promotions, or Spam, across Gmail, Outlook, Yahoo, and other major providers. No more guessing.
True Warmup™
Real sending. Real placement data. True Warmup™ builds your trust score the right way, without spoofed replies or fake opens.
List Cleaning & Verification
We scan every email for risk factors before you send, so you avoid bounces, spam traps, and contacts that hurt your sender reputation.
AI Coach
Inboxsy’s AI Coach sees everything your mailbox sees. It interprets your 53 signals and gives clear guidance on what to fix first, and how.
Easy Setup
Connect any mailbox or CRM. Use our BCC forwarding or direct integrations, whatever fits your stack. Setup takes minutes, not hours.
Track Trust, Protect Reputation, Drive Engagement
- Daily Score: Monitor 53 signals across your domain, content, sending behavior, and replies.
- Clear Guidance: We don’t just show you the problem, we tell you exactly how to fix it.
- True Warmup™: No fake engagement. We use real sending and live placement to build your domain’s reputation from day one.
- Live Inbox Tracking: See where your emails land across Gmail, Outlook, and others, updated in real time.
- Smart List Cleaning: Inboxsy flags risky emails and scores every contact before you send.
- Reputation Protection: Stop silent damage from poor lists, poor placement, or too many bounces.
- AI Coach: Understand what your signals mean and get practical, personalized advice every step of the way.
Hi, I’m Nick
I built Inboxsy after hitting the same deliverability roadblocks as you. Short lived workarounds, broken domains, zero replies, until I mapped every signal affecting inbox placement.
That became our 53‑signal engine, and the foundation of Inboxsy. No guessing. Just clear issues and the exact fixes you need to land in inboxes again.
I am not stopping here though, I am on a mission to fix email for both senders and receivers. Building Inboxsy is a movement towards better email for everyone.
What Early Beta Users Say
What Makes True Warmup™ Different
Most warmup tools rely on fake replies, artificial opens, or sketchy peer-to-peer networks. These no longer work, and in many cases, do more harm than good.
Inboxsy’s True Warmup™ uses real emails, real sending behavior, and live inbox placement data to gradually build trust with Gmail, Outlook, Yahoo, and others.
- We monitor inbox placement on every send, not fake tests.
- No spoofed content. No fake threads. Just your actual email activity, scored and optimized.
- Inboxsy adapts your warmup in real time based on 53 hidden deliverability signals.
If your emails aren’t reaching inboxes, warmup isn’t optional, it’s your starting line. And it needs to be done right.
🚀 Join the Beta and Get 50% Off for Life
Pay just $25/month per mailbox instead of $50, forever.
No contracts. Cancel anytime. 90‑day money‑back guarantee.
Claim Your 50% Lifetime DiscountSimple, Transparent Pricing
Mailbox Monitoring
$50/month
$25/month with Beta
- Daily deliverability scores
- 53 trust, reputation & engagement signals
- Inbox placement tracking
- True Warmup™ with placement monitoring
- Bounce rate detection + domain risk alerts
- Email structure checks (preheaders, reply logic, alt text)
- AI coach + live advice
Email Verification
$0.0075 per email (one-time)
$0.00375 per email with Beta
$0.0050 per email (monthly)
$0.0025 per email with Beta
- Full list cleaning & risk scoring
- Detect bounces, spam traps & bad addresses
- Know which emails are better to send to than others
- Protect sender reputation
- Pay-as-you-go or subscribe monthly