Email on Acid vs MailSlurp
On the evidence we track, Email on Acid leads this comparison with a composite score of 58/100. Scores are only directly comparable because these tools share a category; the full breakdown and every source is below.
Capabilities
Feature-by-feature on the axes that matter for email testing dev. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
Email on Acid
LeaderTests 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.
MailSlurp
MailSlurp is a cloud-based service that allows developers to create test email addresses and phone numbers, preview emails on real devices, validate message delivery, extract data from messages, and build automated messaging workflows through REST APIs and SDKs.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Email on Acid
LeaderFrom $99/month. 7-day free trial.
- Basic$99/month, $0.15 per preview overage
- 1,000 email previews per month
- 100+ email preview clients and devices
- Unlimited users
- API access
- Overage charges for additional previews
- Premium$199/month
- 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
- +2 more
- CustomContact sales
- Custom preview allotments
- Phone and chat support
- Dedicated support documentation
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Integrations
What each product connects to. Counts come from the vendor's own integration directory where one exists.
Email on Acid
LeaderNot documented yet.
MailSlurp
- Zapier
- Gmail
- Outlook
- Dropbox
- Google Drive
- Playwright
- CypressJS
- ACCELQ
- Mailchimp
- Klaviyo
- HubSpot
- Salesforce
- Cypress
- Selenium
Email on Acid or MailSlurp: which one depends on you
A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.
Free to run, no account needed to start. How the evaluation works
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.