Email on Acid
Email previews and pre-deployment QA across 90+ clients.
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.
A SaaS product sends on behalf of its customers, so the deciding factors are tenant isolation, whether suppressions can be scoped rather than global, and whether support can answer why one specific account did not receive one specific email. Lifecycle automation and transactional sending usually need to coexist.
Against trial expiry notices, dunning, onboarding sequences, and per-tenant transactional mail, Email on Acid covers multi-tenant support, and does not cover event stream, the suppressions API, scheduling, and webhook coverage. Whether that gap matters depends on how central those are to the build.
- Multi-tenant: Yes
- Event stream: No
- Suppressions API: No
- Operating since: Not published
- Scheduling: No
- Best published rate per 1,000: Tiers not published in comparable form
- Deliverability: Not applicable; preview and QA, not a sender.
- Webhooks: No
- 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.
- › 90+ client previews including legacy Outlook and major mobile environments
- › Campaign precheck bundles rendering, accessibility, links, and spam in one report
- › Generally cheaper entry point than Litmus
- › Builder and analytics are less polished than Litmus
- › AWeber acquisition introduces some uncertainty about long-term roadmap
- › API surface is narrower than Litmus
Features at a glance
| API | Yes |
| SMTP | No |
| SDKs | None |
| Webhooks | No |
| Templates | basic |
| React Email | No |
| Batch send | No |
| Scheduled send | No |
| Suppressions | No |
| Multi-tenant | Yes |
| Inbound parsing | No |
| Event stream | No |
| Idempotency keys | No |
| Dedicated IP | No |