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Head-to-head · Email Deliverability Software

GlockApps vs Warmup Inbox

  • Updated Sep 2026
  • Both researched from official sources
  • 7 checks side by side
Higher score GlockApps #2 in Email Deliverability Software 8.4/10 Free plan · paid from $59/mo Free plan✓ 5 of 6 features Visit GlockApps
Warmup Inbox #6 in Email Deliverability Software 7.6/10 Free plan · paid from $15/mo (annual) · 7-day trial Free plan✓ 5 of 6 features Visit Warmup Inbox

GlockApps leads on 0 checks, Warmup Inbox on 1, and 6 are even. Who comes out ahead on the 7 yes/no, price and count checks where we have data for both products. The editor score weighs everything else too.

Our verdict

  • Highest scoreGlockApps · 8.4/10
  • Lowest starting priceWarmup Inbox · $15/mo
  • Free planboth

GlockApps scores higher on our rubric for email deliverability software: 8.4 against 7.6 out of 10; our editors rank them #2 and #6.

Warmup Inbox is cheaper to start at $15/mo against $59/mo.

GlockApps is the better fit for detailed inbox and spam-filter testing. Warmup Inbox is the better fit for affordable inbox warm-up per mailbox.

  • GlockApps fits best

    Detailed inbox and spam-filter testing

  • Warmup Inbox fits best

    Affordable inbox warm-up per mailbox

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 GlockApps 8.4/10 Visit ↗ Warmup Inbox 7.6/10 Visit ↗
At a glance
Editor score 8.4 7.6
Ranking #2 in Email Deliverability Software #6 in Email Deliverability Software
Best for Detailed inbox and spam-filter testing Affordable inbox warm-up per mailbox
Pricing model Free plan + paid Free plan + paid
Starting price $59/mo $15/mo (best)
Free plan ✓ ✓
Free trial — —
Deployment Cloud Cloud
Platforms Web Web
Support Email, Live chat, Phone, Docs Email, Live chat
Integrations 7 integrations 10 integrations
Built for Solo, Small business, Mid-market, Enterprise Solo, Small business, Mid-market, Enterprise
Features GlockApps 5/6 · Warmup Inbox 5/6
Inbox placement monitoring ✓ ✓
Sender reputation monitoring ✓ ✓
Authentication monitoring ✓ ✓
Blocklist monitoring ✓ ✓
Spam trap monitoring Not published Not published
API access ✓ ✓
Our review
Pros
  • Tests inbox placement across major mailbox providers
  • Scores spam risk across five named filtering engines
  • Monitors SPF, DKIM, DMARC, reputation, and blocklists
  • Automated warm-up through a network of real inboxes
  • Monitors inbox, spam, category placement, reputation, and blacklists
  • Connects with major mailbox and email-sending providers
Cons
  • Free Inbox Insight offer includes two credits
  • Uptime Monitor uses a separate 14-day trial
  • Paid plans start at $59 per month
  • The feature set emphasizes warm-up and outbound outreach
  • Listed plan rates use annual billing and charge per inbox
  • Custom warm-up controls begin with the Pro tier
Our verdict

GlockApps is an email deliverability platform for marketers, agencies, and businesses that need to understand where messages land and why they may be filtered. Its scope covers inbox placement across major mailbox providers, spam-filter…

Read the review →

Warmup Inbox is a SaaS platform for automating email warm-up and monitoring deliverability across major email providers. It is designed for sales, marketing, recruiting, and agency teams that need to build sender reputation, track inbox…

Read the review →
  1. GlockAppsEmail Deliverability Software 8.4Free plan · paid from $59/mo
  2. Warmup InboxEmail Deliverability Software 7.6Free plan · paid from $15/mo (annual) · 7-day trial

Strengths and trade-offs

  • GlockApps — where it wins

    • Tests inbox placement across major mailbox providers
    • Scores spam risk across five named filtering engines
    • Monitors SPF, DKIM, DMARC, reputation, and blocklists

    Where it doesn't

    • Free Inbox Insight offer includes two credits
    • Uptime Monitor uses a separate 14-day trial
    • Paid plans start at $59 per month
  • Warmup Inbox — where it wins

    • Automated warm-up through a network of real inboxes
    • Monitors inbox, spam, category placement, reputation, and blacklists
    • Connects with major mailbox and email-sending providers

    Where it doesn't

    • The feature set emphasizes warm-up and outbound outreach
    • Listed plan rates use annual billing and charge per inbox
    • Custom warm-up controls begin with the Pro tier
  • GlockApps8.4/10 · Free plan · paid from $59/mo

    A focused toolkit for testing inbox placement, authentication, reputation, and spam risk.

    Visit GlockAppsFull verdict →
  • Warmup Inbox7.6/10 · Free plan · paid from $15/mo (annual) · 7-day trial

    A focused warm-up and monitoring suite with mailbox integrations, outreach tools, and API access.

    Visit Warmup InboxFull verdict →

More comparisons

Reviewed by iTechGuides Editors · Editorial team · Updated Sep 2026

Last updated · How we research and update