What is MAPI service?

MAPI is a client protocol that lets users access their mailbox by using Outlook or other MAPI email clients. By default, MAPI access to a user mailbox is enabled. Disabling MAPI access to a mailbox prevents the user from using Outlook to access their mailbox in Exchange mode.

What is MAPI feature?

MAPI (Messaging Application Program Interface) is a Microsoft Windows program interface that enables you to send E-mail from within a Windows application and attach the document you are working on to the e-mail note. MAPI functions can be accessed by Visual Basic developers through a Basic-to-C translation layer.

Does Outlook still use MAPI?

Outlook clients that are not MAPI over HTTP capable can still use Outlook Anywhere (RPC over HTTP) to access Exchange through a MAPI-enabled Client Access server. In Exchange 2016 and Exchange 2019, MAPI over HTTP can be applied across your entire organization, or at the individual mailbox level.

Is MAPI deprecated?

The MAPI/CDO library has been replaced by Exchange Web Services (EWS), Exchange ActiveSync (EAS), and Representational State Transfer (REST)* APIs. If an application uses the MAPI/CDO library, it needs to move to EWS, EAS, or the REST APIs to communicate with Exchange 2019.

Does Office 365 use MAPI?

MAPI/ HTTP is slowly replacing RPC/ HTTP. Office 365 has already implemented it and Outlook 2016 use this protocol by default.

What is the difference between MAPI and SMTP?

It is a protocol that is used for sending communication information from one computer to another using email addresses. SMTP is used to set up communication rules between the servers….Difference between MAPI and SMTP :

How do I enable MAPI?

Use the Classic EAC to enable or disable MAPI

1. In the Classic EAC, navigate to Recipients > Mailboxes.
2. In the list of user mailboxes, click the mailbox that you want to enable or disable MAPI, and then click Edit .
3. On the mailbox properties page, click Mailbox Features.
4. Under Email Connectivity, do one of the following.

What is the difference between RPC over HTTP and MAPI over HTTP?

RPC over HTTP wrapped its MAPI payload within both RPC and HTTP for transport over the network. MAPI over HTTP just requires an HTTP wrapper. MAPI over HTTP uses two TCP connections — one long-term connection and one short-term connection — for more efficient network use and improved email performance.

Is Gmail MAPI compliant?

MAPI for Gmail® is compatible with any file extension or software. MAPI for Gmail® is compatible with any software and you can use it from any device where you install it. Powerpoint presentations, Acrobat PDF’s, Photoshop edits, Winzip files and many more, with a simple click!

Is Gmail a MAPI or SMTP?

Choosing an email protocol Users with Microsoft Outlook and an Exchange server will almost always use MAPI. Users that utilize other clients like Thunderbird to connect to a free email server such as Gmail, or companies that use Office 365 will likely need to use SMTP settings.

What causes MAPI failure?

MAPI errors are caused by Outlook incorrectly installed or missing/corrupted files. MS Office comes with repair tools which may fix this error. See Microsoft documentation for further details. If a repair is unsuccessful a full uninstall and reinstall may be required.

What is the purpose of MAPI over HTTP?

Messaging Application Programming Interface (MAPI) over HTTP is a transport protocol that improves the reliability and stability of the Outlook and Exchange connections by moving the transport layer to the industry-standard HTTP model.

Is the email message transport over MAPI or HTTPS secure?

This is Microsoft’s proprietary messaging API. Whenever you see MAPI these days that’s a secure protocol that goes over HTTPS, over TLS. In the old days it didn’t necessarily use security, but nowadays, and especially with Outlook online, it’s secure. It’s secure as SMTP over TLS or even more.

What are the different types of providers in MAPI?

In MAPI, developers implement a series of Providers . Providers come in three major types, Transport Providers, Message Store Providers, and Address Book Providers. Providers are DLLs which implement a specific pseudo COM API, such as IMessageStore, and the underlying required interfaces, such as IMAPIProp.

How are DLLs and providers work in MAPI?

In MAPI, developers implement a series of Providers. Providers come in three major types, Transport Providers, Message Store Providers, and Address Book Providers. Providers are DLLs which implement a specific pseudo COM API, such as IMessageStore, and the underlying required interfaces, such as IMAPIProp.