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Litmus Logo
Litmus
Optimize Email Campaigns Instantly
4.6
(382)
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Litmus Reviews & Product Details

Litmus Overview
What is Litmus?

Litmus is a preferred email personalization, optimization, and collaboration software among marketers designed to maximize your ROI. From pre-send campaign development, testing, and AI-driven content recommendations Litmus can deliver the tools you need and help facilitate better creativity to ensure optimized content.

Company Litmus Software, Inc.
Year founded 2005
Company size 51-200 employees
Headquarters Cambridge, Massachusetts, United States
Social Media
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Litmus Product Details
Capabilities
API
Segment
Small Business
Mid Market
Enterprise
Deployment Cloud / SaaS / Web-Based
Support 24/7 (Live rep), Chat, Email/Help Desk, FAQs/Forum, Knowledge Base, Phone Support
Training Documentation
Languages English
Litmus Features
A/B Testing
API Access
Analytics/Reporting
Automated Responses
Bounce Management
Campaign Scheduling
Contact List Import/Export
Custom Fields
Customizable Templates
Deliverability Tools
Drag-and-Drop Editor
Drip Campaigns
Dynamic Content
Email Campaign Management
Email Tracking
Event-Triggered Email
Geolocation Tracking
Integration with CRM
Landing Pages/Web Forms
Mobile Optimized Emails
Multi-channel Marketing
Personalization
Real-Time Analytics
Segmentation
Social Media Integration
Spam Testing
Subscriber Management
Survey/Poll Management
Template Management
Unsubscribe Management
Litmus Media
Litmus video thumbnail
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Litmus Screenshots
Litmus screenshot 1
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Disclaimer
Our research is curated from diverse authoritative sources and meant to offer general advice. We don’t guarantee that our suggestions will work best for each use-case, so consider your unique needs when choosing products and services. Feel free to share your feedback.
Last updated: August 09, 2025
Litmus Logo
382 Litmus Reviews
4.6 out of 5
Small Business (50 or fewer emp.)
Oct 12, 2021
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Great rendering on devices for emails and mobile"
What do you like best about Litmus?

Can see the rendering of email on different devices including desktop and mobile for QA. Can update devices. Integrates with SFMC.

What do you dislike about Litmus?

Sometimes it says the code is broken in litmus but it's fine when we test it in the browser

What problems is Litmus solving and how is that benefiting you?

Have increased usage limit by upgrading to enterprise plan. Can integrate with SFMC.

Small Business (50 or fewer emp.)
Jul 21, 2021
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Litmus is very easy to use and checks against all possible email clients so you save time too"
What do you like best about Litmus?

Litmus is very easy to use and checks against all possible email clients so you save time by not having to go to each one individually. I also like that it integrates with SalesForce so I can do the checks directly there instead of having to toggle between the two platforms.

What do you dislike about Litmus?

Nothing that I can think of at the moment

What problems is Litmus solving and how is that benefiting you?

Making sure our emails work across all email clients and views for consistency.

Mid Market (51-1000 emp.)
Jul 20, 2021
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Amazing tool and simple to use"
What do you like best about Litmus?

Editing your emails live. Being able to see how your code effects your email is a wonderful tool

What do you dislike about Litmus?

So far I've had nothing but a great experience

What problems is Litmus solving and how is that benefiting you?

Ensuring that the emails are rendering properly across all platforms

Small Business (50 or fewer emp.)
Jul 20, 2021
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Great tool to review for all different email clients"
What do you like best about Litmus?

I can keep using the same share URL and send multiple new tests to that URL instead of constantly making a new one for each new test for the same email.

What do you dislike about Litmus?

Sometimes I can't see certain email clients because they don't load properly, and I have to resend the email.

What problems is Litmus solving and how is that benefiting you?

The ability to test emails to make sure they're all consistent before they get sent to the client.

Small Business (50 or fewer emp.)
May 13, 2021
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Great tool"
What do you like best about Litmus?

Ease of use and excellent customer service.

What do you dislike about Litmus?

The pricing is not too flexible for a small agency, the usage is not contant so the needs vary

What problems is Litmus solving and how is that benefiting you?

formatting issues with specific email clients, such as Microsoft

Enterprise (> 1000 emp.)
May 12, 2021
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Wouldn't have survived in the email marketing world without it"
What do you like best about Litmus?

The most significant upside of using Litmus is the possibility to test the emails in a lot of different email clients. I recently noticed that Litmus has come with a drag and drop builder, too (might have existed for a while?), and that will be super helpful for the team I'm on where I'm the only one who knows how to code.

What do you dislike about Litmus?

The biggest downside of Litmus, as far as I can see, is that it is made mainly for developers. If the Litmus builder had been as easy to use as the Mailchimp builder, it would've empowered many people to create a lot of beautiful emails. But now, it seems like we need someone to code up modules and templates first. If that is not the case, I haven't found out how.

What problems is Litmus solving and how is that benefiting you?

I'm not ending up sending out emails that look terrible for a vast majority of our subscribers, that's for sure!

Enterprise (> 1000 emp.)
May 11, 2021
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Brilliant tool for any email marketer"
What do you like best about Litmus?

We work with a wide array of stakeholders, from Gen Z through to X - including professionals and general consumers. The previews and QAs ensure our HTML from Salesforce Marketing Cloud is rendering well across many use cases. Moreover, sending tests directly to the builder and tag team members allows us to proofread and approve content blocks effortlessly. I have already recommended to industry peers who've experienced similar benefits. It's an end-to-end solution, too, meaning I can set up tracking and analysis to augment and tweak future campaigns. In short: Love the builder, previews, QAs, and analytics. Love Litmus.

What do you dislike about Litmus?

Nothing for me. Brilliant for teams and collab. I would like a bit more functionality in the folder structuring and filing, particularly as we move further down the line in involvement, but that's just me being picky with housekeeping.

What problems is Litmus solving and how is that benefiting you?

I'll list them, for ease of reading: - proofreading - device testing - metrics/analytics and ROI rationale - team collaboration and SLT approval - historical reviewing and content archiving Honestly, any marketer performing direct comms to end users - needs Litmus in their lives. There isn't a better solution out there for testing pure HTML through email clients, testing and reviewing sends as a team, and seeing the ROI and effectiveness of what you're doing. The best ESP management tool I've used in my career.

Mid Market (51-1000 emp.)
May 05, 2021
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"QA is a breeze with Litmus"
What do you like best about Litmus?

Robust and very thorough QA and testing features.

What do you dislike about Litmus?

There are so many features, at first, it can be a little tricky to navigate the interface and get around.

What problems is Litmus solving and how is that benefiting you?

Making sure emails are consistently error-free and user-friendly.

Mid Market (51-1000 emp.)
Feb 25, 2021
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"User friendly!"
What do you like best about Litmus?

It is super easy for me to upload emails

What do you dislike about Litmus?

I dislike that you have to name your email twice

What problems is Litmus solving and how is that benefiting you?

We have better email insight with the analytics section provided.

Small Business (50 or fewer emp.)
Feb 25, 2021
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Maximizing Email Efficiency"
What do you like best about Litmus?

Love being able to send samples of the emails to our approvers where they can make comments and see both desktop and mobile versions. This has really improved the efficiency of our timeline and shortened timelines.

What do you dislike about Litmus?

I dislike that some integrations to marketing automation platforms are included in the mid-tier but others are only offered in the higher tiers.

What problems is Litmus solving and how is that benefiting you?

We have solved the problem of our review process. We used to send samples to our marketers that they would print, hand-write changes, and then give back to us. We would then have to send another sample once we made the update. It was much more time consuming and cumbersome than how we are able to do it with online reviews and comments in litmus.

Enterprise (> 1000 emp.)
Feb 24, 2021
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"#1 Tool for Developing Emails"
What do you like best about Litmus?

This is the second company I have worked at where I advocated to incorporate Litmus into their email process. It seamlessly integrates with Salesforce Marketing Cloud and makes collaborating with multiple teams and the UAT process a dream. The browser previews of devices and additional analytics are the key features I leverage for every email. It is the surest way to double check your email will render beautifully for your subscribers.

What do you dislike about Litmus?

One minor update I would like to see is when you are updating your email to a new version the only way to sync after the first version is through an email send. While this is easy with SFMC preview send, it be nice to just resync directly from Marketing Cloud. Other than that I would just like to see more from the platform! I want all my email accessories in one place like GIF makers, Countdowns, and more! For now they are outstanding in updating the current tools they have such as their code builder.

What problems is Litmus solving and how is that benefiting you?

Litmus became a very important asset when it came to collaborating with multiple team members to review and approve emails. Instead of having separate chats and multiple email threads all the comments and approvals are in one place for everyone to see. This helped streamline our review process almost instantly and it's so user friendly it hardly took any training.

Small Business (50 or fewer emp.)
Feb 27, 2020
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Best Email Testing Tool by far"
What do you like best about Litmus?

Creating multiple versions of emails easily and then testing them while I create more! It allows me to test the emails and know they work before my team will test them themselves. The interface is super user friendly. I like the functionality to be able to select which email clients I want to view

What do you dislike about Litmus?

No sorting option to organise my tests by date or name

What problems is Litmus solving and how is that benefiting you?

Testing my emails before they go to be tested by the marketing teams

Mid Market (51-1000 emp.)
Feb 11, 2020
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Easy to use & super insightful"
What do you like best about Litmus?

Analytics reporting is super detailed & provides fantastic insights into how & where your blasts are reaching people. The platform rendering shows how well your blasts are being design & translating to different OS.

What do you dislike about Litmus?

TBH, for our purposes it works well for what we do.

What problems is Litmus solving and how is that benefiting you?

Litmus was super helpful in moving our blasts to cater to mobile devices. Our designs now are pretty close to air tight on both Apple, Desktop and Outlook.

Enterprise (> 1000 emp.)
Nov 21, 2019
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Great email preview platform"
What do you like best about Litmus?

Litmus makes it very easy to see how my emails are going to appear in the inbox of various providers. If i had to pick, i would say the best use i have is identifying responsive issues and the monster that is outlook.

What do you dislike about Litmus?

I wish there was a real time html editing ability vs having to edit and save to view the update. Not too much of a bother however.

What problems is Litmus solving and how is that benefiting you?

Litmus has seriously decreased the amount of time spent in QA. That's a huge time suck especially as tech changes. It also helps me identify issues along the way.

Mid Market (51-1000 emp.)
Nov 20, 2019
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"The Most Comprehensive Email Tool Out There!!!"
What do you like best about Litmus?

The number of email clients available is awesome. Plus, Litmus is great about constantly updating the tool and keeping on top of new features.

What do you dislike about Litmus?

Keeping templates and tracking organized is a constant effort. I wish there was a built in process to force you to organize better.

What problems is Litmus solving and how is that benefiting you?

Email rendering, tracking, faster template development. I'm able to code and test seamlessly, which has provided enormous time savings.

Enterprise (> 1000 emp.)
Nov 08, 2019
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Great tool for QC-ing Email campaigns before pushing send"
What do you like best about Litmus?

I like that it has every type of ESP available to send render tests to before sending to the consumer. This is huge with so many different ESPs out there it is imperative to test on all of them and be able to trouble shoot and make sure the message that is sent is exactly how you want it to look on all platforms.

What do you dislike about Litmus?

I wish there was a bigger community of debugging tricks in Litmus. There is a decent community but I feel like it could be bigger. Sometimes the builder option renders correctly but then the checklist option sometimes doesn't reflect it.

What problems is Litmus solving and how is that benefiting you?

Rendering issues in Dark mode. Litmus has been very beneficial for our team as we can feel confident that when it passes the Litmus render check that the email will be sent to our customers exactly how it was designed to.

Small Business (50 or fewer emp.)
Nov 07, 2019
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Love Litmus"
What do you like best about Litmus?

Litmus is extremely easy to use -and extremely important for anyone sending an email. They have a great platform for checking client rendering, suggesting best practices, as well as workflow help with Litmus Proof and deeper analytics insights with their tokening of campaigns. On top of that, they have a wonderful blog, host webinars, and have a conference as well.

What do you dislike about Litmus?

They recently addressed the one pain point I had with being able to push a single email from code to all of the other tabs.

What problems is Litmus solving and how is that benefiting you?

We are catching problems before they arise - allows us to mitigate the chance that something broken goes out. We've also been able to realize deeper insights from the analytics feature.

Mid Market (51-1000 emp.)
Jul 30, 2019
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Love, love, love LITMUS!"
What do you like best about Litmus?

I feel like it's just the industry standard of what email should be. Along with really good emails their one of the few voices that preach the importance of email, especially accessibility. Beyond that their tool is really just solid in terms of testing different email clients, even their WYSIWYG editor is good.

What do you dislike about Litmus?

We haven't really been able to utilize their tracking & analytics because of how our emails are built we're not really able to take advantage of it.

What problems is Litmus solving and how is that benefiting you?

Email accessibility.

Mid Market (51-1000 emp.)
Jan 22, 2019
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Easy to use, powerful tool"
What do you like best about Litmus?

The newsletter of industry updates I find to be a very quick and easy tool for relevant items in the email world. The platform itself is very easy to use and powerful to ensure you're getting the most out of your email performance

What do you dislike about Litmus?

There are some features left to be desired within email list management.

What problems is Litmus solving and how is that benefiting you?

inbox rendering for the most part. We've caught small, but potentially impactful, issues within our email code base via Litmus.

Small Business (50 or fewer emp.)
Jan 20, 2019
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"A great email rendering service"
What do you like best about Litmus?

The best thing about litmus is the fact that they display rendering of how our email will look on every email client that is important to us. There have been other services I have used that do not have all email clients on them.

What do you dislike about Litmus?

There is nothing I dislike about litmus. They have a great platform. The only criticism, and s subjective one, is that it is a pricey service for small businesses.

What problems is Litmus solving and how is that benefiting you?

We have solved the issue of sending out emails that do not look how we intended them to on different email clients, or worse yet, are broken.