Testi@
Testi@ is a web service and browser extension for previewing email rendering as screenshots across clients and devices.
What Testi@ is
Testi@ is a web service and browser extension for previewing email rendering as screenshots across clients and devices. It lists Outlook, Apple Mail, Android, Gmail, Yahoo, Thunderbird, and other email clients. Users can paste email source, upload HTML, convert EML files to HTML, or upload ZIP files containing HTML. Rendered HTML source helps with debugging, and a spam test can identify issues that may stop screenshots from being generated. Users can send test emails to an address in settings to check delivery and screenshot creation, while the Chrome extension tests local URLs and specific email service provider pages. A free plan and four-day trial are listed. The free account covers Gmail and Yahoo in Chrome, with six extra previews generated for a random project after 24 hours. The paid 1 user plan costs £16 a month, billed monthly. Testi@ also describes GDPR processing and stated encryption measures.
Good
- Previews many listed email clients
- Accepts source, HTML, EML, and ZIP
- Rendered HTML supports debugging
- Spam testing included
- Chrome extension supports local URLs
Watch out
- Free account coverage is limited
- Screenshots have email-height limits
- No API access
- Paid plan costs 16.00 GBP monthly
Who it suits
It suits email designers, developers, and teams checking message appearance across clients and devices. It also fits users who need spam checks, rendered source, or ESP delivery verification.
Verdict
Testi@ brings client screenshots, debugging source, spam checks, and ESP verification into a web and extension workflow. Its free access is limited, while broader use requires the 16.00 GBP monthly one-user plan.
Plans and prices
From Testi@'s own pricing page, checked 8 Oct 2026.
| Plan | Price | What it gives you |
|---|---|---|
| 1 user | £16 a month | 1 user · per month |
The facts
Each one read from Testi@'s own pages, with the date it was checked.
Where it runs
- Browser extension
- Testi@ offers a Chrome extension for testing local URLs and specific email service provider pages.checked 8 Oct 2026
The company
- Company
- The site identifies the operator as Testi@ Limited at Kemp House, 128 City Road, London, EC1V 2NX.checked 8 Oct 2026
- Founded
- 2016checked 28 Sep 2026
- Headquarters
- London, United Kingdomchecked 28 Sep 2026
What it does
- Debugging
- The service provides rendered HTML source to help users debug email previews.checked 8 Oct 2026
- Email input
- Users can paste email source, upload HTML files, convert EML files to HTML, or upload ZIP files containing HTML.checked 8 Oct 2026
- ESP integration
- Users can send test emails to an address in settings and connect to check whether the email arrived and screenshots were generated.checked 8 Oct 2026
- Limits
- The FAQ gives approximate email height limits of 20,700 pixels for Apple iOS and up to 34,000 pixels for other clients, after which screenshots are cut.checked 8 Oct 2026
- Privacy
- The privacy policy says the company processes personal data in line with GDPR and describes technical and organizational measures to protect it.checked 8 Oct 2026
- Purpose
- Testi@ lets users preview email rendering in screenshots across email clients and devices.checked 8 Oct 2026
- Security
- The FAQ says passwords are hashed in the browser using bcrypt, server-side password hashes use salted memory-intensive hashing algorithms, and email addresses are encrypted with AES and a per-user random salt.checked 8 Oct 2026
- Spam testing
- The site offers a spam test tool for identifying issues that may prevent screenshots from being generated.checked 8 Oct 2026
- Support
- The site provides Feedback & Support and Contact Us links.checked 8 Oct 2026
- Supported clients
- The site lists Outlook, Apple Mail, Android, Gmail, Yahoo, Thunderbird, and other email clients.checked 8 Oct 2026
Money
- Free account limits
- The FAQ says a free test account includes Gmail and Yahoo in Chrome, with six extra previews generated for a random project after 24 hours.checked 8 Oct 2026
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