Event Invite · Techy
Overall compatibility: 99/100 across 21 email clients · 21 of 21 clients passing (18 clean at 100%) · 68 compatibility warnings (0 error-level) · 9.5KB compiled HTML.
Emailens Original Template
Designed and tested in-house with the Emailens email engine, scored and optimized for cross-client compatibility.
Client Compatibility
Score: 99/100 · 21/21 passing
Notes on this template
It opens: "root@protocol:~$ status T−21d > invite --role=backend_engineer Protocol Summit Two days of talks on distributed systems, queues, and the infrastructure that keeps production honest. No keynote fluff, just internals. Date Oct 14–15 Location Austin, TX Format 2 tracks /// headline_sessions [01]...". Preheader: "Two days on distributed systems, queues, and the infrastructure that keeps production honest.". Links: "save_your_seat()". 0 images, 3 Outlook-only blocks, no dark-mode query, system fonts.
The spread is what matters on this template: 100 in Superhuman against 91 in Outlook Classic, a 9-point gap across the same file. 18 of the 21 clients render it without a single flagged property. Outlook Classic is the one to preview against after any edit, because it is where this template has the least margin, and the 68 warnings behind that score are concentrated there rather than spread evenly.
At 9.5KB compiled it has roughly 93KB of headroom before Gmail clips the message at 102KB and hides the rest behind a "View entire message" link. Inlined CSS and base64 images both count toward that, so watch it as you add sections.
Safe to customise: The date, time zone, place and the registration button. Put the time zone next to the time: an invite read across regions is the classic source of people turning up an hour early.
Leave alone: The event details as text in the body. Calendar clients and screen readers can only use what is text, and a date baked into the header image is invisible when images are blocked.
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