Deliverability & Warmup
Land in the inbox,
Land in the inbox,
every single time
Unlimited automatic warmup, sender rotation and live placement tests keep your domains healthy and your campaigns out of spam. MailOptimal watches your reputation around the clock so replies actually happen.
ATSNDMLoved by 10,000+ outbound teams · 4.8/5 rating
Deliverability
New mailboxConnected
Ssarah@outreach.getacme.comWarming
Starting automatically
Warmup begins immediately
Volume ramps day by day
No DNS setup required
Health
94/100
Inbox
98.4%
Spam
0.02%
Deliverability over 14 daysSpamInbox
98/ 100
Excellent deliverability
Landing in the primary inbox across major providers.
Inbox placement 98.4%By provider
GmailPrimary
OutlookInbox
YahooInbox
iCloudInbox
AuthenticationAll pass
SPF record valid
DKIM signed
DMARC enforced
MX & reverse DNS set
ReputationTrusted
Not on any blocklist
Sending reputation: high
Complaint rate: 0.01%
How it protects you
Deliverability, handled end to end
Click through every layer that keeps you out of spam.
Warmup
Mailboxes
14
Reputation
Trusted
Warmup
Active
Warmup volume rampSpamInbox
Placement test
98/ 100
Excellent deliverability
Landing in the primary inbox across major providers.
Inbox placement 98.4%By provider
GmailPrimary
OutlookInbox
YahooInbox
iCloudInbox
Authentication
AuthenticationAll pass
SPF record valid
DKIM signed
DMARC enforced
MX & reverse DNS set
DNS records
TXT · SPFSet
CNAME · DKIMSet
TXT · DMARCSet
Re-checked continuously, you are alerted if anything drifts.
Reputation
Reputation
High
Bounce
0.3%
Complaints
0.01%
30-day reputation92%
Trusted by all major providers
Live monitoring
Real-time reputation tracking
Auto-throttle if score dips
Instant alerts on issues
Blocklist & spam
Blocklist monitoringClean
Spamhaus, not listed
Barracuda, not listed
SpamCop, not listed
SURBL, not listed
Spam-word check0 issues
Subject and body scanned for spam triggers before every send.
Catch issues before they ever reach a prospect.
FAQ
Frequently asked questions
Is warmup really unlimited?
Yes, warm as many mailboxes as you connect, on every plan including Starter, at no extra cost.
How long until I can send safely?
New domains typically warm over 2–3 weeks. MailOptimal ramps volume automatically and tells you when an inbox is ready.
Do you test against Gmail and Outlook?
Placement tests cover the major consumer and business providers so you know where you land before you scale.
What happens if my reputation drops?
You get an alert, sending throttles automatically, and spam correction works to recover placement.
InfraOptimal
Deliverability starts with the IP
Warmup can only do so much on a shared pool. InfraOptimal mailboxes send from IPs reserved for your workspace, checked against the major blocklists daily, with SPF, DKIM and DMARC written for you. From $1.00 a mailbox.
| 100 mailboxes a month | Cost |
| InfraOptimal, dedicated IP | $100 / mo |
| Google Workspace, shared IP | $400 / mo |
| Microsoft 365, shared IP | $400 / mo |
Dedicated IPs only · 10 mailbox minimum · SMTP and IMAP included
Start in minutes
Stop landing in spam
Warm your inboxes and protect your domains, free for 14 days, no credit card.