SDK 26 build. maintenance release/

Gmail OAuth adopted. If you have gmail settings in your accout, you need to re-Authenticate in account setup screen.

1. Updated help for current connect information that use app password. 2. Maintenance of PUSH functionality. 2. Changes regarding Xccode15.

iPhone 12 pro, pro max screen resolution supported.

Fixed chat bubble color change issue.

Adaptation softbank email(i) smtp transport specification change.

1. Modified to support screen sizes for iPhoneX/Xs/Xmax/XR 2. Update information regarding help contents. 3. Minor bug fix.

iOS 12 support.

Support for Softbank Email(i) transmission specification change.

1. Fixed iOS11 push issue. 2. Adopted outlook.com SMTP AUTH change. 3. Modified deprecates issues came from frameworks changes.

1. Show/Hide password toggle with checkbox in mail account setup. 2. Support for AOL SSL changes. 3. Added description that iCloud mail needs app password. 4. Minor functionality up.

Support for iOS11.

Modified Help contents.

change of screen mode. (stopped using compatibility mode) modify of help document.

Configured push certificates.

minor bug fix.

iOS10 support

1. Fixed email address picking issue for IOS9. 2. Fixed new mail chat input width for iPhone 6/6s/6 plus/6s plus.

1. iOS9 support added. 2. Native screen resolution support.

1. SMTP port number can be specified from other mail settings. 2. Fixed again image display issue in previous release. 3. Fixed trap of unknown encoding received.

1. Added SMTP port setting to Mail account. 2. Fixed issue appearing mail header in mail detail screen. 3. Improved imap communication module.

Fixed issue setting option "Enable subject input" may terminate application.

1. iOS 7.1.1 supported. 2.Changed secure setting behavior of mail account setting "other".

Fixed issue force subject empty option not saved.

1. Added stripe list display option in sender list screen. 2. Added force empty subject option in chat view. 3. Minor improvements and fixes.