May 9, 2014 · MAPI/HTTP increases the CPU load in the Exchange Client Access Servers. This is a 50% increase over Exchange 2013 RTM, however it is still lower than Exchange 2010 …

Apr 8, 2005 · CDO and Outlook are both MAPI applications, meaning that they use MAPI APIs to access their data, and therefore, the underlying providers. CDO and Outlook share a common …

Aug 12, 2022 · Calendar sharing in Microsoft Outlook is a feature many users rely on daily to manage their manager or team calendars. Microsoft has recently made some big changes to …

May 31, 2024 · I don't think microsoft will ever try to add mapi to it because mapi is a "client side" technology that whereas the new outlook is all server side (excluding the html/css rendering).

Dec 6, 2018 · REST instead of MAPI At Ignite, the Outlook team said that "coming soon" we'd have the ability (in an Insider version of Outlook) to manually enable the new calendar …

May 15, 2025 · The classic Outlook (Win32) client relies on MAPI and old-style caching behavior, which makes it less ideal for fast-paced shared mailbox environments. What we’re now …

May 31, 2016 · Some of relatively common and difficult issues we see in support are related to client connectivity to Exchange.

Dec 8, 2018 · Hi Have a problems with Office 365 / Outlook 2016 / Exchange Online Plan 1 I have a service mailbox which has 60000 emails in deleted items folder...

Oct 28, 2015 · For MAPI/HTTP clients, an Exchange 2013 Client Access server will authenticate the user, do a service discovery, and determine that the mailbox version is 2013 and where …

Date: July 2025 Introduction In today’s threat landscape, legacy authentication is one of the weakest links in enterprise security. Protocols like POP, IMAP, SMTP Basic, and MAPI are …