Microsoft has announced a major update to its iOS email and calendar app, Microsoft Outlook, bringing support for third-party add-ins, and celebrating two years since the release of an iOS adaptation of the company’s venerable e-mail client. The new add-ins feature allows users to integrate with third-party apps such as Trello, Evernote, and more directly from email messages in their Outlook inbox. Microsoft has announced partnerships with Evernote, GIPHY, Nimble, Trello, and Smartsheet for an initial set of Outlook plug-ins, and has indicated that they are producing several of their own add-ins available for the platform as well, with Dynamics 365 and Microsoft Translator available out of the gate, and “many more” promised to follow. The new add-ins for Outlook on iOS complement the versions already available for Outlook on Windows and Mac and on the web, extending their functionality to iPhone and iPad users. The new add-in features are available for Office 365 today, and Microsoft indicates that they’re “rolling out gradually” to Outlook.com users.