email pop3 imap exchange activesync

Differences Between POP3, IMAP and Exchange ActiveSync (MAPI)

There are many differences between POP3, IMAP and Exchange Online P1/P2, which used ActiveSync (MAPI). Some of these are the reasons why you should consider to migrate to Office 365.

With increasing security breaches and the fear of ransomware, Office 365 have attracted many businesses that are starting to take Data Security and Data Privacy more seriously.

POP3

IMAP

Exchange  Online P1/P2

Description

Post Office Protocol Version 3

Internet Message Access Protocol

ActiveSync (MAPI) Messaging API

Mail

Download new Mail in Inbox and remove/keep copies on mail server.

Cannot sync other mail folders.

Sync Mail Folders (Limited Functionality)

Sync Mail Folders

Sync Contacts

No

 No

 Yes

Sync Calendar

No

No

Yes

Sync Tasks

No

No

Yes

Sync Notes

No

No

Yes

Can Set Retention Policy

No

No

Yes

Sharing Mailbox and Calendar

No

No

No

Cost

Low

Low

from US$4 per mth

Mailbox

Low (Shared by All users)

Low (Shared by All users)

50Gb in Active Mail, 50Gb for Archive Mails

Email Client

Works with many mail clients

Works with many mail clients

Works with Outlook

Multiple Devices

Work with a single device only

work with multiple devices with limited functionality

Work with multiple devices perfectly

Data Privacy

Low

Low

High (See below)

Data Security

Low

Low

High (See below)

Server Availability

Low

Low

High

Mail Management

Managing mail in PST can be quite tedious and time-consuming

Managing mail in OST and PST can be quite tedious and time consuming

Easy

Office 365 Privacy and Security

Privacy in Office 365

Read how Microsoft addresses privacy issues associated with cloud computing and online services.

Top 10 security and privacy features

Review the top security and privacy considerations to help you determine the security and trustworthiness of cloud service providers and their services.

Read how the Microsoft approach ensures that our customers’ data in our enterprise services remains private.

Review the top security and privacy considerations to help you determine the security and trustworthiness of cloud service providers and their services.