ClearBeez

300 billion emails are sent and received daily, worldwide. Needless to say, managing your inbox is crucial. But don't worry, I've got you covered. Here are some tips and tools to make you more productive:

How to find out if you're on Spamhaus in 2 minutes. Spamhaus is the most powerful email blocklist in the world. If you're on it, your #deliverability tanks across hundreds of mail providers — instantly. How to check: 1. Find your sending IP (from your ESP dashboard or email headers) 2. Visit check.spamhaus.org 3. Paste your IP. Get the answer in 2 seconds. Common reasons for getting listed: → You hit a spam trap (an address never used by a real person) → Complaint rate exceeded 0.3% → Your account was compromised → You bought a list (don't do this) If you're listed: identify the cause, fix it, then request removal. Don't request removal without fixing the root cause — they'll re-list you within hours. ClearBeez - clearbeez.com #Spamhaus #EmailDeliverability #Blacklist #EmailSecurity #SysAdmin #Marketing

Your domain has a credit score. Have you checked it lately? @gmail rates every sending domain on a 4-tier scale: → HIGH — your emails reach the inbox → MEDIUM — some filtering, mixed results → LOW — most emails land in spam → BAD — outright rejection It's literally a credit score for your domain. And like a credit score, you don't see it until you check. Free tools to check: → @Google Postmaster Tools (the most important) → @Microsoft SNDS (for Outlook deliverability) → @SenderscorePod by Validity (0-100 IP score) → @Cisco Talos (Good/Neutral/Poor) If you've never checked your domain reputation, you're flying blind. Set up Postmaster Tools today. It takes 5 minutes. ClearBeez - clearbeez.com #SenderReputation #EmailDeliverability #EmailMarketing #Gmail #Marketing #B2B

We built an email validator because every existing one pretended AI didn't exist Six months ago, I tried to make Anthropic Claude verify emails for my cold outreach. I wanted to say: 'Hey Claude, validate these 10 leads I scraped from LinkedIn and draft personalized intros.' Every email validation API required me to write glue code. None of them had MCP support. None of them had a CLI I could pipe into a shell script. All of them wanted me to log into a dashboard like it was 2015. So we built @clearbeez . Native MCP server for Claude Desktop. CLI that installs via brew. API that returns in <200ms. Works with n8n, and have all major CRM and marketing platform integration and any agent framework. Same 9-layer verification engine as the big players, but designed for how developers and AI agents actually work. Try it free, no credit card → clearbeez.com #EmailMarketing #Deliverability #EmailDeliverability #MarketingTips #SaaS #B2B

What '550 5.1.1' actually means (and why it's costing you money). Got a bounce with code 550 5.1.1? That's the receiving server saying: 'This mailbox does not exist. Stop trying.' It's a HARD bounce. Permanent. Every retry damages your sender reputation. Quick reference for the codes you'll see: → 550 5.1.1 — mailbox does not exist (remove now) → 550 5.7.1 — blocked, you're on a blocklist → 550 5.7.26 — DMARC failure → 550 5.7.515 — Microsoft says your auth isn't strong enough → 421 4.7.0 — temporary deferral, your ESP will retry → 452 4.2.2 — mailbox full (try again later) Most teams only know '550 = bad'. Knowing the subcode tells you EXACTLY what to fix. @clearbeez - clearbeez.com #EmailDeliverability #SMTP #BounceCodes #EmailMarketing #SysAdmin #DevOps

📨 Every email validation tool was built for the era of manual list cleaning. We built one for AI agents. Here's an uncomfortable truth: @zerobounce1, @NeverBounce , Hunter, and every other email validator look almost identical. Dashboard. CSV upload. API. Same three features for a decade. Meanwhile, the world moved on. Your AI agent should be able to verify emails before it drafts outreach. Your pipeline should validate leads before it writes to your CRM. Your 🤖 Claude Desktop setup should have email validation as a tool, not a separate login. @clearbeez is the first email validator built for the agent-native era. Native MCP support. CLI-first workflows. Real-time API that actually returns in 200ms. This isn't a feature — it's a different category. See why the AI era needs a new category → 🐝 clearbeez.com/why-clearbeez #emailvalidation #emailverification #SaaS #email #AIagent

Email validation that works with your AI agents, CLI, and pipelines — not just a dashboard Every email validation tool on the market is dashboard-first. You log in, upload a CSV, download results. That was fine in 2015. But in 2026, your workflows live in code — signup forms, CI/CD pipelines, AI agent loops, webhook handlers. @clearbeez is built for how developers actually work. One API call, under 200ms. A CLI you can pipe into bash scripts. Native MCP tool so Claude and Cursor can verify emails without glue code. 9-layer verification — syntax, DNS, MX, SMTP, catch-all, disposable, role-based, AI risk scoring — all in a single endpoint. Zero waste billing: you only pay for verified results. Duplicates and unknowns are free. Start free with 200 credits/month → clearbeez.com #emailverification #validation #email #clearbeez

Cryptographic signatures, explained without the math. DKIM is just a wax seal for your email. When you send an email, your server signs it with a private key. The receiving server fetches your public key from DNS and checks: 'Was this message tampered with? Is it really from this domain?' If the seal is intact → trust signal. If broken → spam folder or worse. DKIM has one big advantage over SPF: it survives email forwarding. SPF breaks the moment an email is auto-forwarded. DKIM keeps the signature intact. Setup time: 30 minutes. Most ESPs do it for you. Most teams forget to verify it actually works. Check your DKIM today. Look for 'dkim=pass' in the email headers. @clearbeez - clearbeez.com #DKIM #EmailAuthentication #EmailSecurity #Deliverability #SaaS #DevTools

The 10 DNS lookup limit nobody warned you about. If your SPF record has too many `include:` statements, it silently breaks. RFC 7208 limits SPF evaluation to 10 DNS lookups. Exceed it and your record returns 'permerror' — which receivers treat as a hard fail. Common culprits: → include:_spf.google.com (counts as ~3) → include:spf.protection.outlook.com (~2) → Every ESP you've ever tested (~1 each) Most teams hit the limit by their 5th tool integration. They never get a warning. Just declining deliverability they can't explain. Audit your SPF record this week. Remove old ESPs. Flatten what you can. @clearbeez : clearbeez.com #SPF #EmailAuthentication #DNS #Deliverability #EmailSecurity #SysAdmin

“Protect your sender reputation before it’s too late.” The biggest shift in 📨 email marketing isn’t 🤖 AI writing emails. It’s AI deciding who deserves to receive them. 🎯 Bad data = wasted spend. 🗑️ Clean data = higher ROI. ClearBeez + AI agents = ✔ Smarter targeting ✔ Better deliverability ✔ Real growth impact 👉 clearbeez.com #EmailStrategy #AIRevolution #MarTech #ClearBeez

You: "Verify these 5 LinkedIn leads before I push them to Instantly." Claude (with Clearbeez MCP): • 3 valid • 1 risky • 1 hard bounce caught @AnthropicAI That's a saved sender reputation, in one prompt. clearbeez.com #ClaudeAI #Deliverability #SalesOps

🤖 AI agents are doing everything… So why are you still verifying emails manually? 👀 @clearbeez + MCP = ⚡ Auto email validation ⚡ No code ⚡ Better deliverability Let AI handle the boring work. 👉 clearbeez.com #emailmarketing #emailvalidation #verification

While you sleep, @ClearBeez is busy: • Cleaning your email lists • Killing bounces & traps • Protecting your domain reputation • Making sure your next campaign actually reaches inboxes Most tools wait for problems. ClearBeez prevents them. Silent. Smart. Always on. #EmailMarketing #Deliverability #SaaS

1 in 5 legitimate emails never reaches the inbox. clearbeez.com/email-delivera… Real number: 21% of legitimate marketing emails never make it to the recipient's inbox. Another 45% land in spam. Only 34% reach the primary inbox. Three things separate the 34% from everyone else: → Authentication (SPF + DKIM + DMARC) → Sender reputation (built over time) → List hygiene (validate before you send) Most teams obsess over subject lines and ignore the foundation. Then they wonder why open rates are dropping. Fix the foundation first. #EmailMarketing #Deliverability #EmailDeliverability #MarketingTips #SaaS #B2B

DMARC protects your domain. @clearbeez protects your reputation. 📩 DMARC → authentication ⚠️ Bad emails → still hurt deliverability 🔍 ClearBeez → validates before you send Clean list = trusted domain = better inbox rate 🚀 To know more - clearbeez.com/what-is-dmarc #B2BMarketing #EmailDeliverability #DMARC #EmailSecurity #EmailMarketing #ClearBeez

We’re not heading toward “personalized UI” anymore. We’re heading toward per-user software. Every user gets their own interface. Own workflows. Own logic. Same product → infinite versions. That’s Generative #UI. UI is no longer designed… it’s generated. 🚀

“Why are you still manually verifying emails in 2026?” 🤖 AI agents are writing code. AI agents are closing deals. Now… AI agents are cleaning your email list too 👇 ⚡ Real-time email verification ⚡ Works with Claude, GPT & MCP tools ⚡ No setup headaches Stop wasting credits on bad data. Start letting AI handle it. 👉 clearbeez.com/mcp #AI #EmailMarketing #SaaS #GrowthHacking #MCP #Automation #ClearBeez

We’ve seen campaigns fail for one simple reason: Bad emails hiding inside “good” lists. Not hard bounces. Not obvious errors. Just silent killers: → Old employee emails → Catch-all domains → Disposable signups After cleaning? Same campaign → +18% uplift in results That’s when we realized: Deliverability is a data problem first. If you want to understand what actually makes an email “safe” 👇 clearbeez.com/anatomy-of-ema…

Bad emails don’t just bounce. They destroy your campaigns silently. Clean your list before you hit send. 👉 clearbeez.com

We're live on MarketingDB! ClearBeez — Verify emails anywhere — via API, CLI, or AI age marketingdb.live/project/clearb… @mdanassaif