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SeaMonkey 2.40 additional Release Notes

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releasesSimilar blog post in German languageWe have a new release: SeaMonkey 2.40

Additionally to the rather outdated “official” Release Notes here you find some more information concerning changes with SeaMonkey 2.40.

New features

Please see Wiki-Page. I do not know which Firefox43 – features made it into  SeaMonkey

A Bugzilla query shows  SeaMonkey 2.40-specific RFE-Fixes.


  • Bugs in SeaMonkey 2.39 what have been fixed for SeaMonkey2.40.
  • Bugs which have been fixed in  Thunderbird and Firefox since SeaMonkey2.39. Not all bugs in Firefox or Thunderbird do affect SeaMonkey, but also it is not sure that all fixes will work in SeaMonkey.

New bugs

Attention: In (Mail- or HTML)-Composer  ‘Rightclick  →  Languages →  Download more dictionaries …‘ will lead to this page “Dictionaries & Language Packs” with a Link to Deutsches Sprachpaket für SeaMonkey 2.39. This language pack is for SeaMonkey version 2.39 and must not be installed for SeaMonkey 2.40. Probably the add-on-installer will reject installation – but you never know. And who uses the Add-On-Converter might be seduced to adapt the “Maximum Version”  and to install the converted Language Pack (I have not tested yet whether that really would be possible). A Language pack with a version number not matching with SeaMonkey version number can cause serious problems, even make unusable a user profile.

The “Known -Issues“- list is outdated, here an attempt for a more realistic overview.

Possible new bugs (“Regressions“)

You can find Workarounds for new problems  in the Wiki


Old and new bugs

A horribly long list, what does not consider that not all Thunderbird– and Firefox-bugs are relevant for SeaMonkey. And many of  them are UNCONFIRMED or outdated (have been fixed in between).

I hope my queries do not contain copy/paste/adapt-errors.


All builds from download page are for 32 bit systems (as far as I know).
Windows builds will work on 32bit and 64bit systems
Linux 32bit builds will not run on 34bit systems “from the scratch”. You can try the 64bit build from contrib.
MAC: I haven’t a clue.

See Bug 1257256 State clearly that Linux builds in Downloads Table are for 32bit only



Download-SeiteThanks to all who made possible this release.



Clker-GrafkThe SeaMonkey-Project is living thanks to contributions of the Community, manpower and donations. Any amount is appreciated (suggestion: 5 € or Flattr). Possibilities for donation: to the SeaMonkey e. V. or via my private campaign. Backgrounds concerning the reasons why I currently do not recommend to donate for the SeaMonkey e. V. you find  here in the unofficial German SeaMonkey News Blog, the posting in the official SeaMonkey Blog has been deleted. With a click on the pile of money picture at the right you will reach my private donation campaign (not under responsibility of the SeaMonkey-Project or of mozilla).


Author: rrbd

Freelancer, Engineer, Camper, Canoeist

One thought on “SeaMonkey 2.40 additional Release Notes

  1. My SeaMonkey 2.39 DE on WIN7 (official Build 20151103191810) after ‘Help → Search for Updates …’ states “No Updates available”, although 2.40 does exist.

    It seems Edmund Wong already has an idea concerning the roots of the problem, see “Updates…”

    I submitted Bug 1256567 SeaMonkey 2.40 not recognized as valid update for SeaMonkey 2.39 .



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