Comparison
Why SendGrid is the #1 Reason Your Cold Emails Land in Spam
SendGrid bans cold email accounts, mixes your reputation with spammers on shared IPs, and offers zero protection for your domain. Here's why thousands are switching to Mission Inbox.
Comparison
At a Glance
The differences that matter for cold email
Feature
Cold Email Policy
Infrastructure
AI Protection
Setup Time
.avif)
Outreach-Friendly
Isolated Servers
MI Shield™ Included
<5 Minutes
SendGrid
Banned & Suspended
Shared IP Pools
None
2-3 Days
Outreach-Friendly
Isolated Servers
MI Shield™ Included
<5 Minutes
Start Sending
SendGrid
Banned & Suspended
Shared IP Pools
AI Protection
2-3 Days
See the difference true infrastructure isolation makes
Get Started with Mission Inbox
All Your Email Workloads.
One Platform. Isolated Servers.
SendGrid forces you to mix all email types on shared infrastructure. Mission Inbox gives you isolated servers for each workload—so your cold email never affects your invoices, and vice versa.
Sales
Cold outreach and prospecting
Isolated Server
Marketing
Campaigns and newsletters
Isolated Server
Financial
Invoices and statements
Isolated Server
Transactional
Receipts and notifications
Isolated Server
SendGrid
Mixed Reputation Risk
All email types share the same infrastructure:
Your cold email campaigns affect invoice deliverability
One bad campaign can burn your entire domain
No separation between marketing and transactional
Account bans affect all your email sending
Mission Inbox
Complete Isolation
Each workload gets its own isolated infrastructure:
Sales emails never affect financial email reputation
Each workload has dedicated IPs and servers
Marketing campaigns can't burn transactional sending
Never get banned—each workload is protected
features
Why Choose Us
Everything you need for reliable, scalable email delivery
SendGrid's Problem
SendGrid Bans Cold Email.
We Don't.
We Don't.
SendGrid's Terms of Service explicitly ban cold email. Thousands of accounts get suspended every month for "unsolicited emails." Your business stops overnight.
Account Suspensions
Cold email violates SendGrid's ToS. Your account can be banned without warning.
No Domain Protection
SendGrid doesn't check if your emails look like spam before sending. Your domain burns.
Shared IP Contamination
Your emails share IPs with spammers. Their bad reputation becomes yours.
Mission Inbox Solution
MI Shield™: AI Protection Before You Send
Mission Inbox is built for cold email. MI Shield scans every email before it leaves, blocking anything that looks like spam. Your domain stays protected.
Cold Email Friendly
Built for outreach. We don't ban cold email—we help you do it right.
AI Spam Detection
MI Shield blocks emails that look like spam before they hurt your reputation.
Isolated Infrastructure
Dedicated IPs and servers. Your reputation is yours alone—no shared risk.
Shared IPs vs. Isolated Infrastructure
SendGrid pools thousands of senders on shared IPs. One spammer ruins deliverability for everyone. Mission Inbox gives you dedicated servers.
SendGrid
Shared IP Pools
Thousands of senders on the same IP
One spammer tanks everyone's reputation
No control over who you share with
Unpredictable deliverability
Result: Your emails land in spam because of others
Mission Inbox
Isolated Infrastructure
Sales emails never affect financial email reputation
Sales emails never affect financial email reputation
Sales emails never affect financial email reputation
Sales emails never affect financial email reputation
Result: Predictable deliverability you can trust
Setup: 2-3 Days vs. 5 Minutes
SendGrid requires manual DNS configuration, IP warmup, and deliverability consulting. Mission Inbox automates everything.
SendGrid: Complex & Slow
Manual DNS record configuration
IP warmup takes 2-3 weeks
Deliverability consulting required
Complex sender authentication setup
No automated protection
Mission Inbox: Automated & Fast
Automated DNS configuration
Instant warmup starts automatically
MI Shield protection from day 1
One-click sender authentication
Start sending in under 5 minutes
The Verdict: Who Is This For?
Stick with SendGrid if:
You only send transactional emails (receipts, notifications)
You never do cold outreach or prospecting
You're okay with shared IP reputation risk
You have a dedicated deliverability team
Switch to Mission Inbox if:
You do cold email outreach or prospecting
You want dedicated infrastructure and IPs
You need AI protection for your domain
You want to start sending in under 5 minutes
Stop Risking Your Domain on SendGrid
Join thousands who switched to isolated infrastructure with AI protection. Start sending in under 5 minutes.
No credit card required · Start free trial · Cancel anytime