Litmus
Litmus is an email marketing platform that allows you to build, test, and analyze high-performing email campaigns across every device and client to ensure a perfect subscriber experience.
Email on Acid
Email on Acid is a comprehensive email pre-deployment platform providing automated testing, content checking, and deliverability tools to ensure your campaigns look perfect across all major inbox providers.
Quick Comparison
| Feature | Litmus | Email on Acid |
|---|---|---|
| Website | litmus.com | sinch.com |
| Pricing Model | Subscription | Subscription |
| Starting Price | $99/month | $74/month |
| FREE Trial | ✓ 7 days free trial | ✓ 7 days free trial |
| Free Plan | ✘ No free plan | ✘ No free plan |
| Product Demo | ✓ Request demo here | ✓ Request demo here |
| Deployment | ||
| Integrations | ||
| Target Users | ||
| Target Industries | ||
| Customer Count | 0 | 0 |
| Founded Year | 2005 | 2009 |
| Headquarters | Boston, USA | San Antonio, USA |
Overview
Litmus
Litmus provides you with a comprehensive environment to create, test, and analyze your email campaigns before they reach your subscribers' inboxes. You can catch broken links, missing images, or formatting issues across more than 100 different email clients and devices instantly. This ensures your brand looks professional every time you hit send, regardless of whether your customer is using an old version of Outlook or the latest iPhone.
The platform simplifies your entire production workflow by offering collaborative building tools and automated QA checklists. You can also track how your audience interacts with your emails through advanced analytics that go beyond simple open rates. Whether you are a solo marketer or part of a large enterprise agency, you can use these insights to refine your strategy and improve your return on investment.
Email on Acid
Email on Acid helps you eliminate the guesswork of email marketing by previewing your campaigns across over 100 different email clients and devices. You can catch rendering issues, broken links, and accessibility problems before you hit send, ensuring every subscriber has a consistent experience. The platform automates the tedious manual testing process, allowing your team to deploy high-quality emails faster and with more confidence.
Beyond simple previews, you can optimize your inbox placement with deliverability tools that check your IP against blacklists and validate your SPF and DKIM records. Whether you are a solo developer or part of a large enterprise marketing team, the platform provides the technical insights needed to bypass spam filters and improve engagement. You can integrate these checks directly into your existing workflow to maintain brand standards across every communication.
Overview
Litmus Features
- Email Previews View your email exactly as it appears across 100+ popular email clients and devices to ensure perfect rendering.
- Visual Editor Build and edit your emails in real-time using a code editor or visual interface that syncs with your ESP.
- Spam Testing Scan your emails against major spam filters to identify issues that might prevent your messages from reaching the inbox.
- Automated QA Checklist Verify that all your links, images, and tracking codes work correctly before you send your campaign.
- Email Analytics Discover which devices your subscribers use and how long they spend reading your emails with advanced engagement tracking.
- Proof and Collaboration Streamline your review process by letting teammates leave comments and approvals directly on your email designs.
Email on Acid Features
- Unlimited Email Previews. View your email exactly as it appears on 100+ combinations of devices and clients to ensure perfect rendering every time.
- Campaign Precheck. Run an automated checklist to verify links, images, and accessibility standards so you never miss a critical error.
- Spam Testing. Test your emails against 23 different spam filters to identify potential delivery issues before they impact your open rates.
- Email Editor. Make real-time code changes in a live editor and see instant updates across all previews without re-uploading your files.
- Accessibility Checks. Optimize your emails for screen readers and visually impaired subscribers with automated ADA compliance suggestions and color contrast adjustments.
- Image Validation. Check for missing alt text and optimize file sizes to ensure your images load quickly and convey meaning effectively.
Pricing Comparison
Litmus Pricing
- 1 user seat
- Email previews
- Litmus Builder
- Basic spam testing
- Email analytics
- Unlimited read-only users
- Everything in Basic, plus:
- Up to 5 user seats
- Editor integrations
- Advanced spam testing
- Litmus Proof collaboration
- CRM and ESP integrations
Email on Acid Pricing
- 1 user seat
- Unlimited email previews
- Campaign Precheck
- Email editor
- Accessibility testing
- Standard support
- Everything in Basics, plus:
- 3 user seats
- Spam testing
- Deliverability insights
- Advanced analytics
- Priority support
Pros & Cons
Litmus
Pros
- Extensive range of email client previews
- Saves significant time on manual testing
- Integrates directly with popular email providers
- Detailed analytics on subscriber engagement levels
- User-friendly interface for non-technical team members
Cons
- High starting price for small businesses
- Occasional slow loading times for previews
- Limited features on the entry-level plan
Email on Acid
Pros
- Unlimited testing allows for frequent iterations without extra costs
- Fast rendering speeds for quick campaign turnarounds
- Comprehensive accessibility tools ensure inclusive marketing
- Intuitive interface makes it easy for non-technical users
Cons
- Higher starting price point than some basic competitors
- Spam testing is restricted to higher-tier plans
- Occasional lag when loading a large number of previews