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Email Warming

Ensure your emails land in the inbox.

Avoid landing in spam by using the most advanced engagement AI to signal real user behavior to the automated filters designed to keep outreach away from your leads' inboxes.

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Peer-to-Peer Network

Your domain warms inside a living network.

Real emails. Real engagement. Every exchange trains providers to trust your domain.

Warming
Active
97%inbox
placement
Primary
97%
Spam
3%

Peer network

t.harrington@revhive.co

Opens ×3

sarah@verdantco.com

Replied

m.reyes@scalepath.io

Opens ×1

Y!

dan@strideops.io

Rescued

k.patel@launchdesk.co

Starred

priya@lumendesk.co

Replied

j.chen@stackworks.io

Opens ×2

Re: Q4 pipeline — inbox placement✦ AI generated
J
james@outreach.co2h ago
to sarah@verdantco.com

Hi Sarah, wanted to follow up — we've been helping SaaS teams lock in inbox placement before Q4 outreach kicks off. Most see meaningful improvement within 3–4 weeks of starting.

Worth a quick call to see if it makes sense for your team?

S
sarah@verdantco.com47m ago
to james@outreach.co

James — actually great timing. We've been hitting spam on cold outreach for the past month and it's killing pipeline. Thursday at 2pm works if you're free?

AI Email Generation

Every email written from scratch by AI.

There are no templates. Every warming email is generated fresh by a large language model that knows your company name, industry, and what you actually do. Subject lines are specific. Replies respond to what was said in the previous message. Threads end naturally — the model is instructed to close conversations the way a real person would.

The result is email that looks indistinguishable from genuine B2B outreach — because to a spam filter, it is.

Personalised to your industry, company name, and description
Full multi-turn threads — not single one-way sends
Every reply references the content of the email before it

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.

Fast Scanner
40% reply rate

outreach.co

Quick question — we help teams like yours fix inbox placement before Q4 outreach starts.

F

persona · fast_scanner

Sounds good, send me more info?

Opened 1m 12s after send · 9s dwell · No scroll

1–2

Opens

5–20s

Dwell

40%

Reply

12%

Typo

Avg Reader
60% reply rate

outreach.co

Wanted to flag how teams are locking in inbox placement before Q4 outreach starts.

A

persona · avg_reader

Thanks for the note. I've been thinking about this — what does onboarding actually look like?

Opened 3h after send · 54s dwell · Re-opened 8h later

2–3

Opens

20–90s

Dwell

60%

Reply

9%

Typo

Thorough
75% reply rate

outreach.co

A few ideas for scaling outbound in H2 without sacrificing deliverability.

T

persona · thorough

Read this twice and clicked the link. Two questions: warm-up timeline for a cold domain, and how does persona rotation work?

Opened ×4 across 2 sessions · 3m 12s total dwell · Link clicked

3–5

Opens

60–240s

Dwell

75%

Reply

2%

Typo

Mobile-First
38% reply rate

outreach.co

Quick question about how you're managing email deliverability right now.

M

persona · mobile-first

Yep sounds intersting, can we scheudle a call?

Opened on mobile · 18s dwell · Starred for later

2–4

Opens

8–40s

Dwell

38%

Reply

14%

Typo

Fast Scanner
40% reply rate

outreach.co

Quick question — we help teams like yours fix inbox placement before Q4 outreach starts.

F

persona · fast_scanner

Sounds good, send me more info?

Opened 1m 12s after send · 9s dwell · No scroll

1–2

Opens

5–20s

Dwell

40%

Reply

12%

Typo

Avg Reader
60% reply rate

outreach.co

Wanted to flag how teams are locking in inbox placement before Q4 outreach starts.

A

persona · avg_reader

Thanks for the note. I've been thinking about this — what does onboarding actually look like?

Opened 3h after send · 54s dwell · Re-opened 8h later

2–3

Opens

20–90s

Dwell

60%

Reply

9%

Typo

Thorough
75% reply rate

outreach.co

A few ideas for scaling outbound in H2 without sacrificing deliverability.

T

persona · thorough

Read this twice and clicked the link. Two questions: warm-up timeline for a cold domain, and how does persona rotation work?

Opened ×4 across 2 sessions · 3m 12s total dwell · Link clicked

3–5

Opens

60–240s

Dwell

75%

Reply

2%

Typo

Mobile-First
38% reply rate

outreach.co

Quick question about how you're managing email deliverability right now.

M

persona · mobile-first

Yep sounds intersting, can we scheudle a call?

Opened on mobile · 18s dwell · Starred for later

2–4

Opens

8–40s

Dwell

38%

Reply

14%

Typo

Volume Control

Dial it up. Pull it back. Keep it ticking.

For a fresh domain, warming starts low and ramps up over weeks — building a clean reputation before any real outreach goes out. Once your score hits 90, drop the volume to 15–25 emails a day. It runs silently in the background, keeping the domain healthy without touching your inbox.

For aged domains running active outbound campaigns, moderate warming — 25–45 emails a day — gives filters a steady baseline of positive engagement to see before your real sends arrive. It acts as a floor under your deliverability.

You set the volume. MailStrike handles the scheduling, persona selection, and send timing automatically.

MailStrike — volume controladjust anytime
Fresh domainRamp up
Scales from 3 → 50 sends/day over 3–4 weeks to build a clean sender reputation.
3 → 50 / day
Warmed domainMaintenance
Low-volume background activity keeps your domain healthy between campaigns.
15 – 20 / day
Active outboundCampaign support
Higher warming volume runs alongside live campaigns to protect inbox placement.
25 – 45 / day

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.

MailStrike — outreach.co
live

Inbox Placement Rate

82%+6% this week

153

Sent today

+12

61%

Reply rate

+3%

7

Active mailboxes

+1

Ramp Phase · Day 14–2122–26 / day

Day 14 of 21 — on track

Placement Breakdown

Primary94%
Promotions4%
Spam2%

Inbox placement — 14 days

Day 1Today · 94%

Live Activity

Opened ×3

thorough_04 · outreach.co

now

Replied

avg_reader_11 · outreach.co

Rescued

mobile_07 · outreach.co

Link clicked

thorough_02 · outreach.co

Starred

fast_scan_08 · outreach.co

Placement trending up

+6 pts in 7 days. Full ramp unlocks in 3 days.

Ready to warm your domain?

Connect your first mailbox in minutes.

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