Boxy vs GyazMail

Boxy is simply a wrapper around Google Inbox. People who are used to Inbox's web interface will feel right at home with Boxy.

If an email contains pictures, flight information, reservation at a restaurant, attachments, links, dates, phone numbers and other information that the application recognizes, it will surface that information in its main view. These items can be viewed and interacted with without having to open the message itself. It allows finding and taking action on the important email information quickly.

Inbox tries automatically bundling similar messages together. For example, Inbox will create bundles for travel information, receipts, promotions as well as group messages temporally. It enables also managing these bundles of messages together - they can all be swiped away together.

Goichi Hirakawa, the main developer of GyazMail, has been committed to his project since 2003 and delivers updates regularly.

The user can define complex mail sorting rules for incoming and outgoing mail.

As of v1.6

GyazMail is a native macOS application, based on the Cocoa API.

the mailbox view is very comfortable

GyazMail is a Japanese product, so it has very good support for Asian languages.

GyazMail is available for all versions of Mac OS X / macOS starting with version 10.1

In GyazMail you can set a maximum number of characters per line. The program will wrap the lines using hard wrapping on sending. This feature is very useful for newsgroups that require a hard break after 72 characters.

Uses Oniguruma regular expression library, which is a very elaborate regular expression engine that supports a big variety of character encodings. This makes very much sense with e-mail, as in an e-mail theoretically any character encoding could be used. Because it is free software (BSD), written in C, very elaborate, stable and still actively maintained it is also used in Atom, Take Command Console, Tera Term, TextMate, Sublime Text, SubEthaEdit, and jq.