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Head-to-head · Email Warmup Software

InboxWarm.ai vs EmailWarmup

  • Updated Sep 2026
  • Both researched from official sources
  • 5 checks side by side
Higher score InboxWarm.ai #5 in Email Warmup Software 7.6/10 From $15/mo · 10-day trial ✓ 3 of 3 features Visit InboxWarm.ai
EmailWarmup #7 in Email Warmup Software 7.4/10 Free plan · paid from $19/mo Free plan✓ 3 of 3 features Visit EmailWarmup

InboxWarm.ai leads on 0 checks, EmailWarmup on 1, and 4 are even. Who comes out ahead on the 5 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreInboxWarm.ai · 7.6/10
  • Free planonly EmailWarmup

InboxWarm.ai scores higher on our rubric for email warmup software: 7.6 against 7.4 out of 10; our editors rank them #5 and #7.

EmailWarmup offers free plan; InboxWarm.ai doesn't. On warmup network, EmailWarmup gives you Shared where InboxWarm.ai offers Private.

InboxWarm.ai is the better fit for growing teams managing many private warmup inboxes. EmailWarmup is the better fit for budget-conscious users wanting feature-rich warmup.

  • InboxWarm.ai fits best

    Growing teams managing many private warmup inboxes

  • EmailWarmup fits best

    Budget-conscious users wanting feature-rich warmup

Advertiser disclosure: iTechGuides is reader-supported. We may earn a commission when you click some links. It never changes our verdict. How we rank.

Side by side

Feature InboxWarm.ai 7.6/10 Visit ↗ EmailWarmup 7.4/10 Visit ↗
At a glance
Editor score 7.6 7.4
Ranking #5 in Email Warmup Software #7 in Email Warmup Software
Best for Growing teams managing many private warmup inboxes Budget-conscious users wanting feature-rich warmup
Pricing model Paid Free plan + paid
Starting price Not published Not published
Free plan — ✓ (best)
Free trial — —
Deployment Cloud Cloud
Platforms Web Web
Integrations 6 integrations 3 integrations
Built for Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features InboxWarm.ai 3/3 · EmailWarmup 3/3
Custom warmup schedule ✓ ✓
Spam monitoring ✓ ✓
Multiple mailboxes ✓ ✓
Specs
Warmup network Private Shared
Daily email limit 100 /day 100 /day
Mailbox providers Not published Not published
Our review
Pros
  • Private seed-inbox network with AI-generated replies and simulated engagement
  • Supports Gmail, Outlook, SMTP/IMAP, SendGrid, Amazon SES, and Mailgun
  • REST API plus inbox placement and SPF, DKIM, and DMARC monitoring
  • Free plan supports one mailbox and 10 warmup emails per day.
  • AI replies, configurable ramping, spam rescue, and placement tracking.
  • Supports Gmail OAuth, SMTP, IMAP, threaded replies, and encrypted credentials.
Cons
  • No free plan; the 10-day trial applies before paid billing
  • The 1-mailbox plan allows up to 100 warmup emails per day
  • Costs are charged per inbox, which can matter for larger mailbox counts
  • Community limits usage to one mailbox and 10 warmup emails per day.
  • Shared mailbox matching may offer less control than a private warmup network.
  • Some paid tiers require manual access while billing automation is being built.
Our verdict

InboxWarm.ai is an email warmup and deliverability platform for startups, agencies, SaaS teams, and enterprises managing multiple sending inboxes. It automates warmup messages and engagement across a private seed-inbox network, while…

Read the review →

EmailWarmup is a web-based email warmup service for founders, agencies, recruiters, sales teams, creators, and other cold-email operators. It connects mailboxes to bidirectional warmup campaigns that generate AI-written subjects and…

Read the review →
  1. InboxWarm.aiEmail Warmup Software 7.6From $15/mo · 10-day trial
  2. EmailWarmupEmail Warmup Software 7.4Free plan · paid from $19/mo

Strengths and trade-offs

  • InboxWarm.ai — where it wins

    • Private seed-inbox network with AI-generated replies and simulated engagement
    • Supports Gmail, Outlook, SMTP/IMAP, SendGrid, Amazon SES, and Mailgun
    • REST API plus inbox placement and SPF, DKIM, and DMARC monitoring

    Where it doesn't

    • No free plan; the 10-day trial applies before paid billing
    • The 1-mailbox plan allows up to 100 warmup emails per day
    • Costs are charged per inbox, which can matter for larger mailbox counts

  • EmailWarmup — where it wins

    • Free plan supports one mailbox and 10 warmup emails per day.
    • AI replies, configurable ramping, spam rescue, and placement tracking.
    • Supports Gmail OAuth, SMTP, IMAP, threaded replies, and encrypted credentials.

    Where it doesn't

    • Community limits usage to one mailbox and 10 warmup emails per day.
    • Shared mailbox matching may offer less control than a private warmup network.
    • Some paid tiers require manual access while billing automation is being built.

More comparisons

All email warmup software comparisons → · Full ranking →

Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

Last updated · How we research and update