What changed in Postal Mime from 2 to 3
1 release numbered after v2.7.6 up to and including v3.0.0, stable releases only. v2.7.6 and v3.0.0 are the newest stable releases of 2 and 3 we track; this page follows them as new ones ship.
- 1 mentions breaking changes
5 changes across 1 release
Changed 3
- header values in headers[].value keep the whitespace that folding introduced instead of having every whitespace run collapsed to a single space
- single value headers such as subject and from resolve to the first occurrence of a duplicated header rather than the last
- to, cc, bcc and replyTo are returned in document order rather than reversed
Fixed 2
- resolve non-WHATWG charset labels instead of falling back to windows-1252
- unfold headers per RFC 5322 and resolve duplicated headers first-wins
Original release notes, newest first
The list above is our reading of these notes; the originals from Postal Systems are here, one fold per release.
v3.0.0
3.0.0 (2026-08-11)
⚠ BREAKING CHANGES
- header values in
headers[].valuekeep the whitespace that folding introduced instead of having every whitespace run collapsed to a single space, single value headers such assubjectandfromresolve to the first occurrence of a duplicated header rather than the last, andto,cc,bccandreplyToare returned in document order rather than reversed.