What is a cloud service? Types and features

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Should you move your mail server to the cloud? Explaining the pros and cons, and key points to consider when migrating
2023-07-21(Updated: 2024-12-17 )
Email Delivery BasicsEmail Technology

In recent years, email has become increasingly cloud-based in Japan, but many people may not be aware of the specific benefits that can be gained from doing so.

Also, not all companies will benefit from hospital contact list cloud-based email, and there is a risk of failure if certain points are not kept in mind.

So, this time, in addition to providing basic knowledge about cloud-based email, we will provide a thorough explanation of the advantages and disadvantages, cases in which it is better to cloud-based, and examples of failure.



Table of Contents [Hide]

1.1. Cloud services for individuals
1.2. Cloud services for businesses
2. What is cloud-based mail server? Features and mechanism
2.1. How cloud-based email works
2.2. Is it different from webmail?
3. Percentage of companies that have adopted cloud services
3.1. Cloud service usage rate
3.2. Reasons why companies use or do not use cloud services
3.3. Some companies have implemented cloud computing once but are now moving away from it
4. Benefits of moving email to the cloud
4.1. No need to build your own server
4.2. No restrictions on location of use
4.3. An increasing number of services offer comprehensive security measures
5. Disadvantages of moving email to the cloud
5.1. Costs cannot be completely eliminated
5.2. It is difficult to grasp the overall operating costs
5.3. The company does not accumulate expertise in dealing with problems
6. Cases where it is better to move your mail server to the cloud
6.1. I want to use email and schedule management tools together
6.2. I want to reduce the operational burden of my own server
6.3. I want to be able to quickly access internal company information
7. Cases where cloud-based email management can fail
7.1. Unable to use the functions
7.2. Costs increase
7.3. Struggling to migrate data
7.4. Existing security systems cannot be used
8. Key points to consider when moving to the cloud for email
8.1. Clarify the purpose of the introduction
8.2. Select a model while paying attention to basic functions and UI
8.3. Be sure to check the high level of support
9. If you want to move your email to the cloud, use Arara Message
10. Summary
What is a cloud service? Types and features


A cloud service is a service that allows you to use IT resources such as servers and storage, as well as application software, via the Internet.

Since the data can be stored on an external cloud server, it does not take up space on the company's own devices or servers, and can be accessed from any device as long as there is an internet connection.

In recent years, as more companies have adopted remote work, an increasing number of users, both individuals and corporations, are storing email data received on their devices on external cloud servers (cloudifying email servers).

When it comes to cloud email services, there are two main types: personal and business.