Can I install the latest version of Claws Mail that came bundled with Gpg4win?

Hello, I installed Gpg4win 2.2.1 (Released: 2013-10-07) and on its website, it has version Claws Mail 3.9.1 listed as the version that comes with Gpg4win 2.2.1. However, I’m wanting to upgrade to the latest version that Claws Mail has listed on its site: which is version 3.10.1.

So my questions are:

  1. Can I just download the newer version from and install it into Gpg4win 2.2.1 directory on my hard drive?

  2. If not, why can’t I do this? Does Gpg4win repackage Claws Mail and/or add special features to work inside of its program.

I thought I read somewhere (can’t remember where, it was like 10 days ago and I didn’t save the page) it was safer to use the version that comes with Gpg4win as far as security is concerned, but I’m not sure why.

  1. So in regards to the above question, if it’s safer (more secure), why? I mean, Claws Mail comes with the following plugins related to Gpg; a) PGP Core, b) PGP Inline and c) PGP MIME.

Please help and thanks for reading my question.

Hi Bill,

as we (from the Gpg4win Initiative) did not provide the new version of the Claws-Installer at, I cannot say for sure how this installer works.
Ideally it should be able to use install it.

The Gpg4win Initiative started to package Claws Mail for windows many years ago, it is good and nice to see that our installer work is useful for them. Claws Mail had a new version and created a new installer because Gpg4win did not get around doing one, so it is certainly good that they created an installer to make the new version accessible.

In light of planning a new version of Gpg4win, the developers are currently discussing how to deal with the two installers. E.g. see

A sidenote: Please use already OpenPGP/MIME if you can as email format.
For arguments see:

As for which installer has more secure defaults or components: I don’t know
as I did not examine this question.

Best Regards,
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