Litmus vs GlockApps

Litmus9.3Visit GlockApps8.5Visit

Higher score Litmus #1 in Email Testing Software 9.3/10 7-day trial Free trial✓ 5 of 5 features Visit Litmus

vs

GlockApps #3 in Email Testing Software 8.5/10 Free plan Free plan✓ 1 of 5 features Visit GlockApps

• Litmus fits best

  Teams needing broad pre-send email QA

• GlockApps fits best

  Deliverability monitoring and sender reputation

Advertiser disclosure: iTechGuides is reader-supported. Vendors can pay for top positions in our rankings and for a place on other products' pages, and we may earn a commission when you click some links. Bought places stand at the number bought; this page and our disclosure say so. Paying vendors may get a fuller, more detailed review from our editors, and that review can change their score. How we rank.

Side by side

Feature	Litmus 9.3/10 Visit ↗	GlockApps 8.5/10 Visit ↗
At a glance
Editor score	9.3	8.5
Ranking	#1 in Email Testing Software	#3 in Email Testing Software
Best for	Teams needing broad pre-send email QA	Deliverability monitoring and sender reputation
Pricing model	Paid	Free plan + paid
Starting price	—	$59/mo
Free plan	—	✓ (best)
Free trial	7 days	—
Deployment	Cloud, Browser extension	Cloud
Platforms	Web, Chrome extension	Web
Support	Email, Docs	Email, Live chat, Phone, Docs
Integrations	12 integrations	7 integrations
Built for	Solo, Small business, Mid-market, Enterprise	Solo, Small business, Mid-market, Enterprise
Features Litmus 5/5 · GlockApps 1/5
Spam checks	✓ (best)	Not checked yet
Accessibility checks	✓ (best)	Not checked yet
Link checks	✓ (best)	Not checked yet
Inbox testing	✓ (best)	Not checked yet
API access	✓	✓
Specs
Email clients	100 clients	Not checked yet
Device coverage	Both	Not checked yet
Our review
Pros	Previews across 100+ email clients and devices Checks accessibility, links, spam issues, content, and code Integrations, Chrome extension, and REST APIs support varied workflows	Tests inbox placement across major mailbox providers Monitors SPF, DKIM, DMARC, reputation, and blocklists Includes automated alerts, integrations, and REST API access
Cons	No free plan; access is paid with a 7-day free trial Litmus Basic includes one full user Litmus Plus is scoped to email teams of 2–3 people	Free Inbox Insight access provides two credits Uptime Monitor has a separate 14-day trial Paid plans start at $59 per month before applicable VAT or tax
Our verdict	Litmus is an email marketing platform for designers, developers, and marketing teams that need to build, inspect, and monitor campaigns before and after sending. Its core workflow combines email creation, previews across 100+ clients and… Read the review →	GlockApps is an email deliverability platform for marketers, agencies, and businesses that need to understand how messages reach recipient inboxes. It tests inbox placement across major mailbox providers, evaluates spam-filter scores,… Read the review →

Strengths and trade-offs

• Litmus — where it wins

  • Previews across 100+ email clients and devices
  • Checks accessibility, links, spam issues, content, and code
  • Integrations, Chrome extension, and REST APIs support varied workflows

  Where it doesn't

  • No free plan; access is paid with a 7-day free trial
  • Litmus Basic includes one full user
  • Litmus Plus is scoped to email teams of 2–3 people

• GlockApps — where it wins

  • Tests inbox placement across major mailbox providers
  • Monitors SPF, DKIM, DMARC, reputation, and blocklists
  • Includes automated alerts, integrations, and REST API access

  Where it doesn't

  • Free Inbox Insight access provides two credits
  • Uptime Monitor has a separate 14-day trial
  • Paid plans start at $59 per month before applicable VAT or tax

• Litmus9.3/10 · 7-day trial

  Broad pre-send email QA with previews, testing, monitoring, integrations, and APIs.

  Visit LitmusFull verdict →
• GlockApps8.5/10 · Free plan

  A broad deliverability toolkit for inbox placement, reputation, authentication, and alerts.

  Visit GlockAppsFull verdict →