E-Warmup
Limited time; 7-day free trial

Warm Up Your
Domain Before Your
Mailchimp or Mailgun
Campaigns Go Out.

Connect your sending domain in under 30 seconds. We build the inbox reputation your campaigns need before they reach your list.

No credit card neededCancel anytime

8.5M+

Emails Warmed

5,000+

Active Inboxes

98%

Avg Inbox Rate

Inbox3
Spam3
A

[email protected]

Re: Q3 pipeline review

10:02 AM
O

[email protected]

Your warmup is active

9:48 AM
D

[email protected]

Proposal attached — take a look

9:21 AM
✓ Inbox placement: 94% — Domain reputation: Excellent

What will you
love about us?

Mailchimp and Mailgun make sending easy. We make sure what you send actually reaches the inbox.

Set Up in Minutes

  • No technical skills needed
  • Works with all Mailchimp plans and Mailgun SMTP or API
  • 24/7 live support

Pre-Campaign Warmup

  • Fully automated reputation building
  • 5,000+ real inboxes, no bots
  • Warms your domain before your list sees a single email

Placement Testing Included

  • Test where each campaign lands before it goes out
  • Real-time reputation monitoring across Gmail and Microsoft
  • Monitors SPF, DKIM, and DMARC continuously

See the Difference
in 14 Days

Watch your sending domain's inbox placement climb before your next campaign goes out.

100%75%50%25%0%Target: 85%Spam threshold: 35%D1D2D3D4D5D6D7D8D9D10D11D12D13D14
Inbox placement rateSpam threshold (35%)Target (85%)

How Mailchimp and Mailgun Warmup Works

From cold domain to campaign-ready in four simple steps.

Connect

Link your sending domain in under 30 seconds. No changes to your Mailchimp or Mailgun account needed.

Configure

Choose your ramp-up pace and daily warmup volume. Start gentle if your domain is brand new, faster if you are switching platforms mid-campaign.

Auto-Warm

Our 5,000+ real inbox network sends, opens, and replies to emails from your domain automatically. Inbox providers start building a trust profile for your domain before your real campaigns launch.

Monitor

Track inbox placement rate, reputation score, and blacklist status in your live dashboard. We alert you if anything shifts before it affects your list.

Works With Your Entire Stack

Native integrations with all major email providers and sales tools — no configuration needed.

Google

Google

Outlook

Outlook

Yahoo

Yahoo

AWS

AWS

SendGrid

SendGrid

Mailgun

Mailgun

Zoho

Zoho

Other email providers

Other

Testimonial

What  our users say

E-Warmup helped them to increase their email deliverability 🎉

3 weeks ago

Our outbound emails were landing in spam without us realizing it! E-Warmup helped us fix inbox placement and stabilize sender reputation. We saw a 38% increase in open rates within two weeks.

Theo Marshall

Theo Marshall

Head of Growth, Northlane Commerce

1 month ago

Managing multiple client domains was always risky with deliverability. E-Warmup gave us visibility across everything. We've seen up to a 2.1x increase in reply rates on outbound campaigns.

Isla Bennett

Isla Bennett

Client Success Director, BrightPath Agency

2 weeks ago

We thought our issue was bad email copies. Turns out, emails weren't even reaching inboxes. E-Warmup fixed that, and reply rates increased by 44% in the first month.

Marcus Vale

Marcus Vale

Co-Founder, SyncroFlow