Exchange is for servers running exchange only. Which means you will need to purchase an exchange server, and use Outlook in order to read your email.
IMAP keeps all your email on the server (so if you read it on your mobile, then your computer will still show the message as being read)
POP will download all your mail to your computer, and delete it from the server after a time period that you can set (so you can check your email from a multiple computers within that period)
As far as actual usage statistics, I am not sure, but I highly prefer IMAP, as it lets me check my email from all 5 of my computers
我认为没有人在互联网上使用 Exchange-MAPI，只是在本地和专用网络中使用。 MAPI 使用动态 RPC 调用，它并不是真正设计用于在 Internet 上工作。我认为您可以使用“MAPI over HTTP”，但这只是一种让低端移动设备使用本地应用程序而不是 OWA 的黑客方法...
根据统计数据，您一方面可以搜索 Exchange 许可证的数量出售加上 Windows CE 驱动的智能手机并进行估算，另一方面搜索 IMAP4 和 POP3 的协议流量统计
I don't think anyone is using Exchange-MAPI on the internet, just inside local and private networks. MAPI uses dynamic RPC calls and it is not really designed to work over the internet. I think you can use "MAPI over HTTP", but that's just a hack to enable low-end mobile devices use a local app instead of the OWA...
As of statistics, you could on the one hand search for numbers of Exchange licenses sold plus Windows CE powered smartphones and make an estimation, and on the other hand search for protocol traffic statistics for IMAP4 and POP3
hotmail on outlook using outlook connector uses mapi over http so if you think that is just "some hack" there is nothing to discuss.
I think Google licenses MAPI for some of it's calendaring and messaging. So it's not just "some hack" for using over the internet. Far from it.
MAPI is a full 2 way collaboration system entailing not just email but calendars, tasks, contacts etc.
IMAP is just for email. If you just want email then IMAP is probably the way to go as it's open and the most widely used. Unless you use Exchange. IMAP (probably intentionally) runs like crap on Exchange compared to MAPI. But strangely it runs fine on everything else.
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IMAP 和 IMAP POP 是通用的。
Exchange 仅适用于运行 Exchange 的服务器。这意味着您需要购买 Exchange 服务器并使用 Outlook 来阅读电子邮件。
IMAP 将您的所有电子邮件保存在服务器上（因此，如果您在手机上阅读，那么您的计算机仍会显示该邮件正在阅读）
POP 会将您的所有邮件下载到您的计算机上，并在一段时间后从服务器上将其删除你可以设置（这样你就可以在这段时间内从多台计算机上检查你的电子邮件）
至于实际使用统计数据，我不确定，但我非常喜欢 IMAP，因为它可以让我从我的所有 5 台计算机上检查我的电子邮件
IMAP & POP are universal.
Exchange is for servers running exchange only. Which means you will need to purchase an exchange server, and use Outlook in order to read your email.
IMAP keeps all your email on the server (so if you read it on your mobile, then your computer will still show the message as being read)
POP will download all your mail to your computer, and delete it from the server after a time period that you can set (so you can check your email from a multiple computers within that period)
As far as actual usage statistics, I am not sure, but I highly prefer IMAP, as it lets me check my email from all 5 of my computers
大多数用户不使用 Exchange-MAPI
IMAP 不下载数据并将其保存在服务器上。
POP 下载数据并将其保存在本地系统上。
由于 IMAP 速度很快，大多数用户更喜欢使用 IMAP。
Most of the users don't use Exchange-MAPI
IMAP don't download data and keeps it on server.
POP download data and keeps it on the local system.
Due to this IMAP is fast and most of users prefer IMAP for use than anything else.
我认为没有人在互联网上使用 Exchange-MAPI，只是在本地和专用网络中使用。 MAPI 使用动态 RPC 调用，它并不是真正设计用于在 Internet 上工作。我认为您可以使用“MAPI over HTTP”，但这只是一种让低端移动设备使用本地应用程序而不是 OWA 的黑客方法...
根据统计数据，您一方面可以搜索 Exchange 许可证的数量出售加上 Windows CE 驱动的智能手机并进行估算，另一方面搜索 IMAP4 和 POP3 的协议流量统计
I don't think anyone is using Exchange-MAPI on the internet, just inside local and private networks. MAPI uses dynamic RPC calls and it is not really designed to work over the internet. I think you can use "MAPI over HTTP", but that's just a hack to enable low-end mobile devices use a local app instead of the OWA...
As of statistics, you could on the one hand search for numbers of Exchange licenses sold plus Windows CE powered smartphones and make an estimation, and on the other hand search for protocol traffic statistics for IMAP4 and POP3
使用outlook 连接器的outlook 上的hotmail 使用http 上的mapi，因此如果您认为这只是“一些黑客行为”，则没有什么可讨论的。
我认为 Google 为其某些日历和消息传递授权了 MAPI。所以它不仅仅是通过互联网使用的“一些黑客”。远非如此。
MAPI 是一个完整的双向协作系统，不仅涉及电子邮件，还涉及日历、任务、联系人等。IMAP
仅适用于电子邮件。如果您只需要电子邮件，那么 IMAP 可能是您的最佳选择，因为它是开放的且使用最广泛。除非你使用Exchange。与 MAPI 相比，IMAP（可能是故意的）在 Exchange 上运行得一塌糊涂。但奇怪的是，它在其他方面都运行良好。
hotmail on outlook using outlook connector uses mapi over http so if you think that is just "some hack" there is nothing to discuss.
I think Google licenses MAPI for some of it's calendaring and messaging. So it's not just "some hack" for using over the internet. Far from it.
MAPI is a full 2 way collaboration system entailing not just email but calendars, tasks, contacts etc.
IMAP is just for email. If you just want email then IMAP is probably the way to go as it's open and the most widely used. Unless you use Exchange. IMAP (probably intentionally) runs like crap on Exchange compared to MAPI. But strangely it runs fine on everything else.