Testi@

Open your draft in Testi@ and see what subscribers will actually receive before you schedule a send. Paste your HTML, connect your ESP, or trigger a check from the Chrome extension while you’re editing in a web builder. Pick the inboxes and devices you care about—Outlook, Thunderbird, Apple Mail, Android, and a wide range of iPhones and iPads—and run a pass. Testi@ returns a gallery of screenshots and side‑by‑side views so you can compare how layouts, fonts, and images render across targets. Toggle between desktop and mobile, swap variants, and quickly spot where spacing breaks or buttons wrap.

If you code emails locally, keep your editor open and ship tests on the fly. With the Atom and Sublime Text integrations, you can push a preview without leaving your workflow. When something looks off, open the rendered HTML source inside Testi@ to trace issues line by line and confirm whether the output matches what your inliner or build step produced. Grab fresh screenshots after each tweak and repeat until your template holds up everywhere. Because captures are generated from an actual send, you’re validating the message your audience will receive—not an approximation.

Campaign planning becomes faster when you can compare options in one place. Build two subject-line or layout variants and view them side by side across the same set of clients and devices to decide which is safer to roll out. Select the coverage you need for each project and see how that maps to plan choices before you commit. Use desktop previews to review long newsletters and transactional receipts, then jump to mobile to check hero crops, CTA tap targets, and stacked columns. When you’re satisfied, download screenshots for stakeholder sign‑off or keep them in the project as a visual record of what shipped.

Security and reliability are built in. Test addresses are protected with AES encryption and a unique salt per user, so your testing data stays private. Because Testi@ supports the most common inboxes—including Outlook, Thunderbird, Apple Mail, Android, and 21 iOS models—you can cover your audience without juggling multiple tools. Run quick checks during copywriting, validate HTML as you code, and finalize campaigns in your ESP with confidence that the final render has been vetted. The result is a simple, repeatable QA step that prevents rendering surprises and keeps budgets and timelines on track.