Build Domain Trust and Inbox All Emails With SendScale's Proprietary Warm Up

New domains often look suspicious to ISPs. SendScale's proprietary AI warms up your accounts on autopilot, and utilizes its Automated Reputation Defender to turn cold domains into trusted senders while you sleep. Access over 1MM pooled accounts for warm up.

Email Warmup Dashboard
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
Ashton McCainAshton McCain grew his startup from 0 to 100k users with Sendscale
Marcus HarperMarcus Harper generated 762 warm insurance leads in 3 months
Sam RuizSam Ruiz closed 17 software deals in his first month
William TorresWilliam Torres scaled his agency to $50k MRR using Sendscale
We are best

With SendScale Warm Up clients reach the inbox, NOT spam folder 5x better than any other cold outreach software

Start for Free

How The Email Warmup Works


To algorithms like Google's AI, a new domain or email account sending cold outreach goes directly to spam. To bypass this, you need to build reputation fast.

Peer-to-Peer Network

Your account joins our private network of millions of secure, high-reputation inboxes.

Smart-Conversation Simulation:

Our proprietary AI sends unique, human grade emails between accounts. It opens them, scrolls through them, and replies to them using human, non AI language.

Spam "Rescue" Protocol:

This is critical. If a warmup email lands in the Spam folder, SendScale automatically pulls it out, marks it as "Important," and replies to it. This signals to the ISP that "This sender is relevant, put them in the primary inbox."

How Email Warmup Works

Visual Email Health Diagnostics


Sendscale's health score dashboard optimizes your content and schedule so there is no guessing whether you are ready to send or not.

1

Warmup Status

See exactly how many warmup emails were sent and replied to today.

2

Placement Rates:

Are you landing in Spam or Inbox? We visualize the trend line.

3

Ready Indicator:

We recommend a 14-day warmup period for new domains. Our dashboard tells you exactly when that period is complete and when it's safe to launch your campaign.

Visual Email Health Diagnostics
Verified Customer Reviews

Trusted Email Infrastructure for High-Volume Outbound

Seamlessly integrated tools for prospecting, outreach, and pipeline management. Get everything you need to close more deals in one powerful platform.

SDRsAgenciesFoundersMarketersMarketing agenciesStaffing agenciesGrowth teamsFreelancersRecruitersStartup founders
Lincoln Choi

Lincoln Choi

Founder

onlinkedin

SendScale's pre-warmed inboxes let us send at volume without worrying about deliverability, saving us weeks of setup time and costs.

Valerie Stowers

Valerie Stowers

Marketing Manager

ontwitter

SendScale made it easy to deploy multiple inboxes for our campaigns. Our emails now land in the inbox over 50% of the time, tracking our results easily in the SmartBox.

Georgia Raber

Georgia Raber

SDR Representative

onlinkedin

I can finally reach the volume needed to hit our targets without burning inboxes, all while keeping campaigns running smoothly.

Andrew Mokotov

Andrew Mokotov

Founder

onlinkedin

We went from 5 inboxes to over 100 in just a month, giving our startup the infrastructure to grow our pipeline aggressively without adding headcount.

Willow Blankenship

Willow Blankenship

Recruiter

ontwitter

SendScale allows me to safely reach hundreds of candidates daily while keeping our sending domains healthy. It's a game-changer for outreach, and it's only continuing to grow.

Jane Gavic

Jane Gavic

Head of Accounts

onlinkedin

Now my agency can finally run high-volume outbound campaigns that deliver results. Pre-warmed inboxes and unified management are life savers for our lean team.

1M+

Emails Delivered

78k+

Marketers & SDRs Trust Us

99.5%

Inbox Rate

10M+

Inboxes Generated

Growthcurve
tability
near
Designjoy
SurfOffice
DK

Set It and Forget It Warmup Tools

Warmup isn't a one-time task, it's a lifestyle for your domain


Even when your campaigns are running, SendScale continues warming in the background (at a lower volume) to counteract any negative signals from your cold outreach. This helps maintain a healthy sender reputation and keeps your emails landing in the inbox, not spam.

Set It and Forget It Warmup Tools

Stop Landing in Spam. Start Landing Deals

Enable Sendscale's reputation defender when launching email campaigns to make sure your offering gets seen, not forgotten.


Cold outreach creates negative signals that can quietly push your emails into spam. SendScale works in the background to neutralize those signals and protect your sender reputation. The result:

Better inbox placement
Higher reply rates
More deals from the same campaigns.
Stop Landing in Spam
Case Study

See How Michael and 4,000+ Others Are Scaling Outbound With SendScale

Get everything you need to deploy, warm, and manage outbound email

Michael Lawson
SendScale

28,000+ NEW EMAIL ACCOUNTS, 3,000+ NEW LEADS

"Scaling outbound was a constant struggle before SendScale. Managing inboxes, warming accounts, and protecting deliverability took more time than actually running campaigns. With SendScale's pre-warmed inbox infrastructure and done for us accounts ready to go, we were able to scale our sending safely and generate a far more consistent pipeline without adding operational overhead."

Michael Lawson

Digital Marketing Director

Original

Rated
10/10

Ease of Use

Industry Average: 8.7

Rated
9.8/10

Support Quality

Industry Average: 8.5

Rated
9.7/10

Setup Process

Industry Average: 8.4

Growthcurve
tability
near
Designjoy
SurfOffice
DK

Frequently Asked Questions

SendScale is a comprehensive cold email outreach platform that helps you automate email warm-up, manage campaigns, and track results. It's built to help businesses scale their outreach without compromising deliverability.

Sign Up And Start Instantly Sending Email At Scale

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