9 Free Product Email Templates, Tested in 21 Clients
Product mail carries the most content of any category: release notes, feature announcements and changelogs run long, which makes total size the constraint to watch rather than layout. These are the templates most likely to approach Gmail's clipping threshold once real copy goes in.
Length is the constraint, not layout
Best of these 9 scores 94 out of 100 across 21 clients, and all of them bottom out in Outlook Classic at 67. Last verified against engine data from that date.
Feature announcements and changelogs run long, and length has a hard ceiling in email that layout does not. Gmail clips a message at 102KB and hides everything past it behind a link, which in practice means the unsubscribe footer disappears and the tracking pixel never fires. Each page below shows that template's compiled size, and it is the number to watch as you add sections.
Scores are computed by the Emailens engine from per-client support data derived from caniemail.com (MIT).
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