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    Overview
    ProductRatingMost Used ByProduct SummaryStarting Price

    Email on Acid

    Score6.8 out of 10
    N/AEmail On Acid is an email marketing solution built as a standalone product and as an integration into marketing automation tools such as Salesforce Marketing Cloud and Marketo. It includes features such as collaboration, code analysis, and spam filter testing.

    $86

    month

    Litmus from Validity

    Score8.5 out of 10
    N/ALitmus, from Validity, is an email marketing solution used to create error-free emails in less time. It is also used to build email campaigns, personalize and test them thoroughly, monitor deliverability, and analyze email performance.

    $500

    per month

    Pricing
    Email on AcidLitmus from Validity
    Editions & Modules
    The Basics
    $86
    month
    Premium
    $132
    month
    Professional
    $499
    month
    No answers on this topic
    Offerings
    Pricing Offerings
    Email on AcidLitmus from Validity
    Free Trial
    YesYes
    Free/Freemium Version
    NoNo
    Premium Consulting/Integration Services
    NoNo
    Entry-level Setup FeeNo setup feeNo setup fee
    Additional DetailsSave 15% on the monthly cost when billed annually!Litmus offers different plan types to fit various needs, offering monthly and annual plans, as well as fully customizable Enterprise plans.
    More Pricing Information
    Community Pulse
    Email on AcidLitmus from Validity
    Considered Both Products
    Email On Acid Inc.
    Chose Email on Acid
    Email on Acid has more features than Litmus. They offer more email clients to test on and during my time using both tools, had fewer clients that displayed as being down. This was a major time suck especially when testing for specific clients such as Microsoft Outlook.
    Incentivized
    Validity
    Chose Litmus from Validity
    Having used both, I definitely prefer Litmus over Email on Acid. It's a little more intuitive in terms of UI, and previews load faster. The integration with Salesforce Marketing Cloud also sets it apart further.
    Incentivized
    Chose Litmus from Validity
    In my experience, Email on Acid is far less reliable for accuracy than Litmus
    Incentivized
    Chose Litmus from Validity
    We've tried Email on Acid in the past and Litmus has a much more advanced offering. The user interface is superior and they are constantly innovating and rolling out new features.
    Incentivized
    Chose Litmus from Validity
    Email on Acid years ago. It really is adoption that's shortchanging our use of Litmus.
    Incentivized
    Chose Litmus from Validity
    Email on Acid and BrowserStack. Both are good, but great to see Litmus investing, though the Dark mode preview doesn't really help much in builder.
    Incentivized
    Chose Litmus from Validity
    Litmus is superior to Email on Acid for our needs. Plus, we have a larger contract with Litmus within our parent company.
    Incentivized
    Chose Litmus from Validity
    From a platform and tool perspective, Litmus does a great job at providing rendering testing. No issues.
    Incentivized
    Chose Litmus from Validity
    Litmus has an easier view to see how the emails render across different email clients and seems to be very accurate to how they show up in mailboxes.
    Incentivized
    Chose Litmus from Validity
    We selected Litmus primarily due to its balance of cost and functionality compared to other platforms. It offers a wide range of features for testing, previewing, and optimizing email campaigns, which was critical for our needs. While some competitors offer similar tools, …
    Incentivized
    Chose Litmus from Validity
    Overall better user interface, product and pricing. Litmus is very well-known in the industry.
    Incentivized
    Chose Litmus from Validity
    More robust device/client previews and accessibility testing, better SFMC integration
    Incentivized
    Chose Litmus from Validity
    Litmus has a stronger industry wide reputation and is more widely used across larger marketing teams. The overall capabilities, product enhancement and tool set far exceeds the capabilities of our tools I have evaluated before. Litmus is always coming out with new product …
    Incentivized
    Chose Litmus from Validity
    Litmus has a better UI and is more of a full featured suite of tools for a digital dev/marketer.
    Incentivized
    Chose Litmus from Validity
    Litmus has a better UI and is friendlier to non-email building people who need to collaborate and leave comments
    Incentivized
    Chose Litmus from Validity
    I prefer the Build feature on Litmus, as it allows me to share those previews with others. In addition, there seems to be a greater selection of available email previews. Finally, Litmus is just easier to use and understand.
    Incentivized
    Chose Litmus from Validity
    Great customer service and easy to use tool
    Incentivized
    Chose Litmus from Validity
    Very comparable, but Litmus passes the test and comes out on top.
    Incentivized
    Chose Litmus from Validity
    Litmus rises to the top for the education they provide with blog posts, newsletters, and webinars. Can't beat that value - I've learned so much from them about email design.
    Incentivized
    Chose Litmus from Validity
    LItmus is the most flexible, has the better approval tracking process. I haven't needed to use another tool in so many years, that I don't even know what the others do.
    Incentivized
    Chose Litmus from Validity
    Litmus is the first email platform I've used and I wouldn't change it!
    Incentivized
    Chose Litmus from Validity
    Email acid lacks on updating the up to date client list which is mandatory for email testing .
    Incentivized
    Chose Litmus from Validity
    Litmus has much more functionality than options we have reviewed. That being said, Litmus is much more expensive.
    Incentivized
    Key User Insights
    Would buy again
    No answers on this topic
    99%
    Would buy again
    267 Answers
    Delivers good value for the price
    No answers on this topic
    98%
    Delivers good value for the price
    192 Answers
    Happy with the feature set
    No answers on this topic
    99%
    Happy with the feature set
    268 Answers
    Lived up to sales and marketing promises
    No answers on this topic
    98%
    Lived up to sales and marketing promises
    159 Answers
    Implementation went as expected
    No answers on this topic
    99%
    Implementation went as expected
    157 Answers
    Features
    Email on AcidLitmus from Validity
    Email & Online Marketing
    Comparison of Email & Online Marketing features of Email on Acid and Litmus from Validity
    Feature
    Email on Acid
    9.2
    4 Ratings
    15% above category average
    Litmus from Validity
    5.4
    326 Ratings
    38% below category average
    Mobile optimization10.02 Ratings9.3317 Ratings
    Email deliverability reporting8.53 Ratings8.9230 Ratings
    WYSIWYG email editor00 Ratings7.237 Ratings
    Dynamic content00 Ratings7.933 Ratings
    Ability to test dynamic content00 Ratings7.8209 Ratings
    Landing pages00 Ratings2.63 Ratings
    A/B testing00 Ratings1.84 Ratings
    List management00 Ratings1.82 Ratings
    Triggered drip sequences00 Ratings1.01 Ratings
    Reporting & Analytics
    Comparison of Reporting & Analytics features of Email on Acid and Litmus from Validity
    Feature
    Email on Acid
    9.0
    2 Ratings
    16% above category average
    Litmus from Validity
    7.5
    212 Ratings
    2% below category average
    Dashboards8.01 Ratings5.610 Ratings
    Standard reports10.01 Ratings8.9211 Ratings
    Custom reports00 Ratings7.9148 Ratings
    Pre-Send Testing
    Comparison of Pre-Send Testing features of Email on Acid and Litmus from Validity
    Feature
    Email on Acid
    -
    Ratings
    Litmus from Validity
    9.2
    315 Ratings
    14% above category average
    URL Validation00 Ratings9.1236 Ratings
    Link Tracking00 Ratings8.8206 Ratings
    Spam Testing00 Ratings9.3236 Ratings
    Email Previews00 Ratings9.6313 Ratings
    User Ratings
    Email on AcidLitmus from Validity
    Likelihood to Recommend
    7.2
    (5 ratings)
    9.1
    (338 ratings)
    Likelihood to Renew
    -
    (0 ratings)
    7.4
    (25 ratings)
    Usability
    -
    (0 ratings)
    9.4
    (19 ratings)
    Availability
    -
    (0 ratings)
    9.1
    (6 ratings)
    Performance
    -
    (0 ratings)
    7.4
    (6 ratings)
    In-Person Training
    -
    (0 ratings)
    9.0
    (1 ratings)
    Online Training
    -
    (0 ratings)
    8.2
    (2 ratings)
    Implementation Rating
    -
    (0 ratings)
    9.1
    (10 ratings)
    Configurability
    -
    (0 ratings)
    7.3
    (5 ratings)
    Ease of integration
    -
    (0 ratings)
    10.0
    (2 ratings)
    Product Scalability
    -
    (0 ratings)
    8.5
    (6 ratings)
    Vendor post-sale
    -
    (0 ratings)
    9.1
    (4 ratings)
    Vendor pre-sale
    -
    (0 ratings)
    9.2
    (3 ratings)
    User Testimonials
    Email on AcidLitmus from Validity
    Likelihood to Recommend
    Email On Acid Inc.
    Great for use during the QA process prior to launching new email marketing campaigns to identify inboxing issues, spam red flags, and inconsistent design across ESPs prior to sending. Not so great for creating emails - better suited for testing them as EOA doesn't integrate with marketing automation platforms, so you'd be doing double work.
    Incentivized
    Read full review
    Validity
    I’ve been really impressed with Litmus, especially the personalization features. Being able to easily plug in tools like sentiment trackers right into our emails has helped us gather valuable third-party data without a lot of extra work. I also really appreciate the ongoing learning resources—they offer tons of free webinars and articles that are actually useful. I recently read one on email deliverability that broke down specific data and gave me clear, actionable steps to improve how our emails are hitting inboxes. It’s more than just a testing tool—it’s become a go-to resource in our email marketing toolkit.
    Incentivized
    Read full review
    Pros
    Email On Acid Inc.
    • Great intelligent HTML editor
    • Great inbox preview rendering
    • Excellent customer support
    Incentivized
    Read full review
    Validity
    • Alerts: users are notified whenever comments or approvals are made on emails, with regular reminders being sent in case some were missed
    • Centralised: all members can collaborate and give their feedback on emails, providing a better flow and efficiency for the hierarchy of approvals.
    • Integration: very smooth integration, with little to no errors, with our CRM tool.
    • Validation: alt text, scaling and image ratios are validated
    • Dark mode: a very important accessibility tool used by many email users, this compatibility theme is often overlooked on other platforms. Litmus, however, makes it clear how important it is to review and track emails in this format.
    Incentivized
    Read full review
    Cons
    Email On Acid Inc.
    • Poor interface via Blackbaud
    • Speed
    • Dark mode
    Incentivized
    Read full review
    Validity
    • Sometime, I feel like its slow to use. Speed is something which can be helpful.
    • AI feature. It will be beneficial for us if there is an AI feature for content updates. It can improve the subject line and content based on the performance of our past emails.
    • If it can provide more ideas on CRM based on industry standards, like I work in hospitality, and if it can share data and any new initiative for hospitality CRM, it might be useful for us to consider.
    Incentivized
    Read full review
    Likelihood to Renew
    Email On Acid Inc.
    No answers on this topic
    Validity
    It's one the best tools that we've found for this type of tool but we would like some additional features like spell check so if there's a platform that features that with everything else Litmus has, then we'd potentially look to move over to that platform instead. However, we are overall pretty help with the platform
    Incentivized
    Read full review
    Usability
    Email On Acid Inc.
    No answers on this topic
    Validity
    Litmus has integrations that make the software an integrated part of my work every day. Being able to test right within my email builder is just brilliant. Daily I also use the web interface to review analytics and spam testing. Overall it is one of the pieces of software I use daily without any complaints or issues.
    Incentivized
    Read full review
    Reliability and Availability
    Email On Acid Inc.
    No answers on this topic
    Validity
    We have never had a problem with Litmus being unavailable so I would say their availability is fantastic. There might have been one time years ago that the site was down briefly but it also might have been a server issue on my end. Either way, Litmus was back up and running in a very short time
    Incentivized
    Read full review
    Performance
    Email On Acid Inc.
    No answers on this topic
    Validity
    As with all technology, there are inevitably use-cases where you are unable to get to your original goal without some good old-fashioned experimenting. Some situations will (and are) more urgent which complicates an effective integration of a new process or a new team using an existing process but the "issues" are regularly resolved by re-starting the process specific to when Litmus is introduced to a project. If it doesn't come out the way you're anticipating, run it again and verify there is an issue before declaring all is lost
    Incentivized
    Read full review
    Support Rating
    Email On Acid Inc.
    No answers on this topic
    Validity
    I am always so so impressed with the litmus support team. They are not only prompt but attentive and offer very personalised responses and support
    Incentivized
    Read full review
    In-Person Training
    Email On Acid Inc.
    No answers on this topic
    Validity
    I had internal training for how to use, not lead by litmus. Unsure if there was any external training which took place before my time
    Incentivized
    Read full review
    Online Training
    Email On Acid Inc.
    No answers on this topic
    Validity
    It has all the required information.
    Incentivized
    Read full review
    Implementation Rating
    Email On Acid Inc.
    No answers on this topic
    Validity
    I didn’t really personally participate much in the implementation of Litmus, but from what I observed during the process, it was a smooth process with minimal disruptions. The team was able to get up and running quickly, and the platform’s user-friendly interface made onboarding fairly easy for everyone involved from the start.
    Incentivized
    Read full review
    Alternatives Considered
    Email On Acid Inc.
    Email on Acid has more features than Litmus. They offer more email clients to test on and during my time using both tools, had fewer clients that displayed as being down. This was a major time suck especially when testing for specific clients such as Microsoft Outlook.
    Incentivized
    Read full review
    Validity
    This is not applicable to my role as I have used Litmus to test emails since I have started. Because of the ease of use, timeliness, consistent quality, and affordability that Litmus offers, I haven't found the need to look at similar products or organizations. If all of these features continue to stay strong, I don't plan on changing providers
    Incentivized
    Read full review
    Scalability
    Email On Acid Inc.
    No answers on this topic
    Validity
    With our enterprise account, scalability is not an issue. I have not yet seen or heard of significant issues with user access, API connections for integrations etc. This includes down time for "Scheduled Maintenance" as some providers call them, Litmus has the technology backing to support a global team with a 24-hour workday across regions
    Incentivized
    Read full review
    Return on Investment
    Email On Acid Inc.
    • It makes our quality assurance tests efficient
    • Gives confidence to send strong deliverables to clients
    Incentivized
    Read full review
    Validity
    • Litmus saves our team so much time by making the QA and email review process so much easier, streamlined, and efficient.
    • We often send out campaigns out to thousands of members, and Litmus gives us the assurance and peace of mind that everything is working as it should before it gets sent out.
    • Decreases the number of email review cycles we go through.
    Incentivized
    Read full review
    ScreenShots

    Email on Acid Screenshots

    Screenshot of Whether you know HTML or not, our new Campaign Precheck gives you the power to fix email mistakes while you QA, so you can create a message that every subscriber can read and understand.Screenshot of See what your email looks like on more than 70 clients and devices. View the emails in portrait or landscape so you know how your email will look for every subscriber.Screenshot of Test and edit instantly. Simply load up your email and tweak the code in our editor – you’ll see the preview change as you adjust the code.Screenshot of Whether you’re an email marketer or a developer, our tools can help your team streamline the email testing process. Use the “share” link to easily send test results to team members and clients. Our mark-up tool also allows reviewers to draw or comment within the email previews.Screenshot of Image validation makes sure your images render properly on every email client and device, so you can reach more subscribers on more platforms.Screenshot of Email testing, simplified. Send a test email directly from your email service provider or upload your HTML to our system. We’ll help you spot funky formatting, broken links and code problems.

    Litmus from Validity Screenshots

    Screenshot of Litmus Personalize Essentials, with live polls to give subscribers a voice and drive email engagement.Screenshot of Litmus Email Guardian, featuring 24/7 link monitoring to safeguard emails.Screenshot of Litmus' integrated insights reports, that can automatically combine metrics from Salesforce Marketing Cloud with subscriber engagement insights from Litmus.Screenshot of campaign preview, available in 100+ popular email clientsScreenshot of Litmus' inbox previewing and feedback tools, that help users to spot and fix issues early.