Email on Acid

Email on Acid (now part of AWeber) provides client-rendering previews, accessibility checks, link validation, image and load-time analysis, spam testing, and a campaign precheck workflow. Direct competitor to Litmus with broadly similar coverage and typically lower entry pricing.

Growth work lives or dies on targeting and measurement. What matters is whether behavioral triggers can be built without engineering time, whether the event stream supports attribution past the open, and whether deliverability holds when broadcast volume shares a reputation with product email.

Against behavior-triggered journeys, broadcasts, and winback campaigns measured on revenue, Email on Acid covers multi-tenant support, and does not cover scheduling, event stream, and the suppressions API. Whether that gap matters depends on how central those are to the build.

• Scheduling: No
• Event stream: No
• Deliverability: Not applicable; preview and QA, not a sender.
• Operating since: Not published
• Suppressions API: No
• Best published rate per 1,000: Tiers not published in comparable form
• Multi-tenant: Yes
• Free tier: 7-day free trial; no permanent free tier
• Starts at: Email Pro plan listed on the public pricing page; Enterprise is quote-based

Not applicable; preview and QA, not a sender.

Teams that want Litmus-grade previews at a lower entry price.

Teams already standardized on a sending platform with built-in previews.