Email on Acid
Email testing and validation platform for pre-send campaign quality assurance
- Also known as
- email-on-acid
Available worldwide · Popular in: US
What is Email on Acid?
Tests email campaigns across 100+ email clients and devices to identify rendering issues, validate content for inbox compatibility, check accessibility compliance, and detect deliverability problems before sending.
Email on Acid pricing
Plans, per-tier features and add-ons, dated and linked to live pricing. Pricing changes often; always verify at source before you rely on it.
From $99/month. 7-day free trial.
Basic
Email preview testing with API access
- previews
- 1,000/mo
- clients_devices
- 100+
- 1,000 email previews per month
- 100+ email preview clients and devices
- Unlimited users
- API access
- Overage charges for additional previews
Premium
Full QA suite with accessibility testing and content analysis
- previews
- 2,000/mo
- clients_devices
- 100+
- 2,000 email previews per month
- 100+ email preview clients and devices
- Unlimited users
- Accessibility tests (WCAG 2.2 / European Accessibility Act compliance)
- HTML code analysis
- Link and image validation
- Spam content checks across major ISPs
Custom
Contact salesCustom preview allotments and enterprise support
- Custom preview allotments
- Phone and chat support
- Dedicated support documentation
What Email on Acid does
The capabilities that matter for email testing dev, normalised so it lines up with every alternative. “-” means we haven't confirmed it, not that it's missing.
- API assertions
- ✓
- Rendering preview
- ✓
- Spam score check
- ✓
- Blocklist deliverability check
- ✓
- SMS testing
- ✗
- Production sending addon
- ✗
- Ci cd integration
- ✗
- Multi user inboxes
- ✗
- Open source
- ✗
Platform & deployment
Independently observed- Web
- Cloud / SaaS
Email on Acid FAQ
Common questions about Email on Acid, answered from independent, dated evidence.
What is Email on Acid?
Tests email campaigns across 100+ email clients and devices to identify rendering issues, validate content for inbox compatibility, check accessibility compliance, and detect deliverability problems before sending. It is indexed under Email Testing Dev.
How much does Email on Acid cost?
Email on Acid is a paid product; published pricing starts at $0.15. It is sold across 3 plans (Basic, Premium and Custom). There is no free tier. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.
What platforms does Email on Acid support?
We have confirmed browser-based access to Email on Acid. That is the extent of what we could verify from public sources, so it may well offer desktop or mobile clients we have not indexed.
Can Email on Acid be self-hosted?
We have only confirmed a cloud / SaaS deployment for Email on Acid, so it appears to be vendor-hosted. If a self-hosted option exists we have not found it documented publicly.
What security certifications does Email on Acid have?
We have independently confirmed SOC 2, ISO 27001 and GDPR for Email on Acid. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Email on Acid not holding them. Always confirm compliance directly before you rely on it.
Source: https://www.emailonacid.com/blog/article/email-marketing/gdpr-compliance/
Where is Email on Acid available?
Email on Acid is available worldwide. Its primary market is the United States.
Email on Acid alternatives
Other email testing dev we track, ranked by the same independent score.
- Testmail.appAPI-based email testing platform for automated QA and CI/CD workflowslow · 45%
- MailosaurPlatform for automated email and SMS testing with integrated message previews and test automation supportmedium · 56%
- GreenMailAn open source sandbox for testing email server protocols without sending actual emailslow · 31%
- MailSlurpEmail and SMS testing and automation platform with API and dashboard accessmedium · 54%
- MaildevDevelopment email testing utility with SMTP server and web dashboardlow · 35%
- Mailpitlow · 29%
Compare Email on Acid
Side by side against other email testing dev, attribute by attribute, with a source on every value.
The vioscaleAI score: one lens on the evidence
Not user reviews and not a paid placement: a confidence-weighted blend of the independent signals below (adoption, activity, security posture, and more), which you can sort and re-weight yourself. Vendors can correct their listing but can never move their rank, and stars are weighted low as a vanity metric. It is one way to read the evidence for Email on Acid, not the verdict.
| Signal | Score | Weight | Contribution | Evidence |
|---|---|---|---|---|
| Security posture | 70 | 0.09 | 6.1 | ✓ |
| Pricing transparency | 75 | 0.05 | 4.0 | ✓ |
| Reliability | 45 | 0.05 | 2.4 | ✓ |
| Capabilities | 67 | 0.03 | 2.1 | ✓ |
| Price level | 25 | 0.04 | 1.0 | ✓ |
| Integrations | 0 | 0.04 | 0.0 | - |
Computed . Re-weight it by intent, or see the full method.
All data & sourcesshow ↓
Every value we hold, with its source, retrieval date, and confidence. This is the evidence behind the score: don't trust it, verify it.
Content
| Attribute | Value | Evidence |
|---|---|---|
| Faq | 6 items | mediumsource · 2026-09-10 · 60% |
Features
| Attribute | Value | Evidence |
|---|---|---|
| Capabilities | Api assertions, Spam score check, Rendering preview, Blocklist deliverability check | mediumsource · 2026-08-25 · 60% |
Market
| Attribute | Value | Evidence |
|---|---|---|
| Availability | PrimaryMarkets: … · AvailabilityScope: global · AvailableCountries: … · NotAvailableCountries: … | mediumsource · 2026-08-25 · 50% |
Pricing
Reliability
| Attribute | Value | Evidence |
|---|---|---|
| Sla pct | 99.9 | mediumsource · 2026-08-25 · 60% |
Security
Is Email on Acid the right choice for you?
Tell us the job, the constraints and what you weigh most, and we will rank Email on Acid against the rest of the email testing dev we index, using the same dated evidence weighted your way.
Free to run, no account needed to start. How the evaluation works
Is this your product?
This profile was built from public sources without asking you. You can take the badge below and use it anywhere, and you can claim the profile to correct anything we got wrong. Both are free, and neither moves Email on Acid up or down: nobody can buy rank here, including you.
Take the badge
Live, always current, and free to use on your own site. It shows Email on Acid's independent score and links back to this profile.
<a href="https://www.vioscale.ai/software/email-on-acid" target="_blank" rel="noopener">
<img src="https://www.vioscale.ai/badge/software/email-on-acid.svg" alt="Email on Acid, verified on vioscaleAI" width="330" height="76" loading="lazy" />
</a>Markdown, for a README →
[](https://www.vioscale.ai/software/email-on-acid)Claim the profile
Verify you control the domain, then point us at the pages that state the facts about Email on Acid and add your own description and media. Free, and it does not change the score.
- Correct anything wrong, with evidence
- Point our crawler at the pages that matter
- Write your own description and add media
Not the owner? How vendor profiles work