Persona-based email warming filters can't fingerprint.
MailStrike's AI personas engage your warming mail the way real people handle email.
- Real opens, replies, and spam-folder rescues, not pings
- Every thread written fresh by the LLM, in your voice
- Runs 24/7 in the background while you work
Live warmup activity
Re: Quick question on Q4 planning
dan.k@fieldwave.com
Curious about your setup
owen.v@harborcrest.io
Re: 15 minutes next week
leila.h@beaconops.co
Worth a chat?
marcus.h@stridecaps.io
Re: Scaling outbound in H2
sofia.m@arccourt.io
Peer-to-Peer Network
Your domain warms inside a living network.
Real emails. Real engagement. Every exchange trains mailbox providers to trust your domain. Opens, link clicks, marks as important, and rescues from spam, all flowing back to you in real time.
Real mailboxes, not pings
Every persona is a real account on a real provider. Opens happen in real inboxes. Replies are typed in real Gmail and Outlook clients. Filters can tell the difference between an HTTP event and a human.
A persona engine, not a bot network
Every mailbox runs a distinct human persona, its own reading speed, reply habits, active hours, even typo rate. To inbox providers it looks like real people corresponding, because behaviourally it is.
Active hours (24h)
Active hours (24h)
Active hours (24h)
Active hours (24h)
AI generated content sent in your style and hours
Every warming email is generated fresh by AI from your industry and business description, then sent within each persona's natural operating hours. No two messages are ever the same.
Coverage across every major provider
The network spans every mail surface your real campaigns will eventually hit. Cross-provider diversity is the difference between a domain that lands in Gmail but flunks Outlook, and one that lands everywhere.
Persona Engine
Every mailbox behaves like a distinct, real person.
Each mailbox is assigned a persona at onboarding and keeps it for life. No two mailboxes produce the same engagement trace, because real inboxes never do.
outreach.co
Quick question, we help teams like yours fix inbox placement before Q4 outreach starts.
persona · fast_scanner
Sounds good, send me more info?
12–46s
Dwell
85%
Reply
up to 2h
Window
4%
Typo
outreach.co
Wanted to flag how teams are locking in inbox placement before Q4 outreach starts.
persona · avg_reader
Thanks for the note. I've been thinking about this, what does onboarding actually look like?
16–73s
Dwell
95%
Reply
up to 5h
Window
2%
Typo
outreach.co
A few ideas for scaling outbound in H2 without sacrificing deliverability.
persona · thorough_reader
Read this twice and clicked the link. Two questions: warm-up timeline for a cold domain, and how does persona rotation work?
31–119s
Dwell
97%
Reply
up to 4h
Window
1%
Typo
outreach.co
Quick question about how you're managing email deliverability right now.
persona · mobile-first
Yep sounds intersting, can we scheudle a call?
8–44s
Dwell
79%
Reply
1–18h
Window
7%
Typo
outreach.co
Quick question, we help teams like yours fix inbox placement before Q4 outreach starts.
persona · fast_scanner
Sounds good, send me more info?
12–46s
Dwell
85%
Reply
up to 2h
Window
4%
Typo
outreach.co
Wanted to flag how teams are locking in inbox placement before Q4 outreach starts.
persona · avg_reader
Thanks for the note. I've been thinking about this, what does onboarding actually look like?
16–73s
Dwell
95%
Reply
up to 5h
Window
2%
Typo
outreach.co
A few ideas for scaling outbound in H2 without sacrificing deliverability.
persona · thorough_reader
Read this twice and clicked the link. Two questions: warm-up timeline for a cold domain, and how does persona rotation work?
31–119s
Dwell
97%
Reply
up to 4h
Window
1%
Typo
outreach.co
Quick question about how you're managing email deliverability right now.
persona · mobile-first
Yep sounds intersting, can we scheudle a call?
8–44s
Dwell
79%
Reply
1–18h
Window
7%
Typo
Volume Control
You set the pace.
New domain? Warming ramps up over a few weeks, then settles to 15–25 emails a day once your score clears 90. Already sending? Hold 25–45 a day so filters see real engagement before your campaigns land.
You pick the volume. MailStrike handles the scheduling, persona mix, and send timing.
Warmup configuration
Persona type
Fast Scanner
85% reply
Avg Reader
95% reply
Thorough Reader
97% reply
Mobile-First
79% reply
Daily send volume
Ramp schedule
Conservative
6–8 weeks
Standard
4 weeks
Aggressive
2 weeks
Timezone
Built for everyone fighting the spam folder.
If you send cold email, outreach, or campaigns, you need warming. Here's how different teams put MailStrike to work.
Sales Teams
Pain: You hit send, but buyers never see the email.
Cold outreach only works if it reaches the inbox. MailStrike builds the sender reputation behind your domain so your sequences land where prospects actually read them.
- More replies per sequence
- Pipeline you can forecast
- Reps selling, not fighting filters
Live Dashboard
Watch your inbox placement climb.
Every open, reply, and rescue is tracked in real time. You see exactly where your domain health stands and where it's heading.
Warming questions answered.
How long does email warming take?
By around the two-week mark you should see a noticeable improvement in deliverability. A standard ramp reaches a stable Inbox Reputation Score above 90 by day 21 on a clean account. The exact curve depends on what's happening externally to MailStrike: bounce spikes from a bad list, spam complaints, or sudden volume jumps all slow it down.
Do I have to stop sending real campaigns while warming?
No. Warming runs continuously in the background. For a fresh domain, keep volume low until your score clears 90, then start outreach at 20 to 30 sends a day while warming keeps running underneath to protect the reputation you've built.
Which mailbox providers does MailStrike warm?
Google Workspace, Microsoft 365, Yahoo, Proton, iCloud, Zoho, AWS SES, SendGrid, Mailchimp, Brevo, Fastmail, and any provider that exposes IMAP/SMTP. OAuth is supported for Google and Microsoft; anything else uses an app password. Setup takes under two minutes per mailbox.
Is warming safe for my domain?
Yes. Same-domain mailboxes are never paired, provider rate limits are respected per account, and persona assignments rotate so no detectable pattern forms. Every engagement event is logged in your dashboard, so you can see exactly what ran.
Do I still need SPF, DKIM, and DMARC?
Yes. Authentication records prove the mail really comes from your domain; warming builds the reputation that makes providers want it. Both are required for cold outreach to land. MailStrike runs a DNS check during onboarding and flags weak or missing SPF, DKIM, and DMARC records.
What happens after my domain is warmed?
Sender reputation decays without ongoing engagement signals, so MailStrike keeps running at a lower background volume (15 to 25 sends a day) once the ramp completes. That holds the reputation curve flat or rising while your real campaigns go out.