During last days IBM has released over Live Update the new 188.8.131.52 version with some fixes and an interesting new functionality : users can now automatically look up names in their organization through the IBM Address Book Provider.
Until this fix was released an LDAP server was required for this feature but now for the existing users the only step needed is delete and recreate the Mail profile and this is an incredible easy task to do because profiles for cloud users, could be created with the dedicated link inside the user preferences. New Outlook users will be enabled by default.
Read this link to have some interesting Q&A regarding this topic and here you can find the details of all fixes included in this release.
During last 2 month I've decided tu use Microsoft Outlook 2016 with IMSMO to see and test the features available fro my customers and I've to say IBM Developers are making a great job introducing features and bug fixes.