Email on Acid has been acquired
Details below reflect the latest verified information, but branding and ownership have changed.
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About Email on Acid
Email on Acid is an email testing platform that previews how your email renders across 100+ email clients and devices — Gmail, Outlook, Apple Mail, and more — with deliverability checks, accessibility testing, and spam filter testing. Now owned by Sinch, it is being folded into the new Mailgun Inspect product, with existing-customer migration beginning in 2026.
What's Great
- ✓Preview across 100+ clients
- ✓Deliverability and spam score testing
- ✓Accessibility checker
- ✓Used by enterprise email teams
Watch Out For
- !Expensive subscription
- !Some previews can take minutes
- !Focused on testing only — no sending
Common Use Cases
Pre-send email QA
Email agency client review
Outlook rendering verification
Pricing Model
Paid
From $99/mo. Paid subscription required. Check website for current pricing.
Category
Email Testing & Deliverability
Test, preview, and optimize email deliverability and inbox placement.
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