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Published February 04,2021 by Tvisha Technologies

Learn the Difference Between POP and IMAP

The big difference between POP and IMAP two is that with POP all email is downloaded from the mail server and with IMAP the mail remains on the server.

Which protocol you prefer is entirely up to you. If you want to be able to read your email at multiple locations, keep your email safe or save disk space on your hard drive, then the best option is IMAP. However, if you would like to archive all email yourself, save disk space on your web server, or if you do not have a constant connection to the internet, then POP is often a better choice.

POP: Post Office Protocol

With Post Office Protocol POP you can retrieve emails, just as you would (very) formerly collect mail from a post office. You state who you are, the employee checks whether there is new mail for you and gives it. Your mail program does the same with POP: it connects to the server, says for whom it is coming to collect the mail, and the server passes on the new messages. Your mail program downloads these to your computer for you to read. The messages will then be on your computer and no longer on the pop server.

IMAP: Internet Message Access Protocol

The Internet Message Access Protocol is very suitable for handling email from different computers. For example, at home, at work, and while traveling. The contents of the mailbox are exactly the same on every computer. All incoming, read, and sent e-mails can be viewed anywhere, anytime because they remain stored at XS4ALL. Another advantage of IMAP is that if your hard disk or computer breaks, your email is still safe on its Imap server.

With IMAP, your mail program still connects to the server, says for whom it wants to retrieve the mail, but then only retrieves the address data of the mail (instead of the entire message). These address details tell:

  • to whom the email is addressed
  • who the sender is
  • at what time it is sent
  • the size of the message.

Compare it with an extensive address sticker on a parcel.

Only when you click on the message will the complete message be retrieved from the server. At the same time, the message also remains on the server. In fact, IMAP makes a copy of the message on the server and keeps this copy on your computer. In addition, your mail program keeps the connection with the server open so that you see new emails coming in immediately.


Advantages and disadvantages of POP

  • With POP it is not necessary to have a continuous internet connection.
  • The mail does not take up any space on the server so that the mailbox does not fill up in principle (the number of emails you can save is equal to the capacity of your computer). If your computer crashes, you will have lost all mail.
  • If you use email on multiple devices (such as desktop, smartphone, and tablet), we recommend that you use IMAP.
  • With POP it can happen that you download an email with one device to the local disk of that device. If you then want to view the same email on another device, you will notice that this email can no longer be found.
  • To prevent this, you can use POP to set a copy of the mail to be saved on the mail server.[3]

Advantages and disadvantages of IMAP

  • All your messages can be read from multiple locations, including webmail. The contents of your mailbox are the same on every computer, you also see all sent items.
  • IMAP marks which messages you have already read and which you have not. Also useful if you work with a colleague from the same mailbox. Your email remains safe on the XS4ALL server, so you have an immediate backup.
  • Also don't have to download every post. So you only use bandwidth when you read/download a message. The items sent by you (or others using the mailbox) are visible, also from the webmail, You can create multiple folders.
  • These also appear in other mail programs that use IMAP. You will even see them when you log in to our Webmail!
  • Connection to the internet required (this can be solved with specific settings in your mail client, consult the manual of the program used). All mail remains on the server, so your mailbox will fill up sooner.
  • Fortunately, with XS4ALL you get 25 GB of storage space per mailbox. You can continue with this for a long time.

Features POP:

  • You can also read downloaded emails offline.
  • The e-mail is only stored on the computer with which you retrieve the email.
  • Suitable for viewing your email with a single device (computer).

IMAP features:

  • All e-mail is stored on the mail server.
  • Your email will be automatically backed up.
  • Requires a constant connection to read the email (unless you set your mail program differently).
  • The size of your mailbox on the mail server can become very large.
  • Suitable for email retrieval with multiple devices.

Set up mail program:

It can be useful to manage your email in an email client, such as Thunderbird, Apple Mail, or Outlook on a computer or the K9 Mail app, the iOS mail app, or the Gmail mail app on a mobile device. The mailtrim server settings required for setting up your email program (regardless of which program you use). If you don't know whether you need POP or IMAP, we recommend that you use IMAP.

Still, if you are confused about choosing the best email management software, we recommend having a look at Mail Trim. In this it will be saved email messages, including attachments, are searchable. The email archiving software supports email systems such as Microsoft Exchange, Groupwise from Novell, the email management program Sendmail and Postfix, an open-source email server for Unix. According to the vendor, the email archiving software allows companies to archive messages of different formats at the same time and eliminates the need for email migrations.

POP and IMAP guidelines

Below are some guidelines to help you choose between POP and IMAP. When in doubt, IMAP is usually the best choice. If you cannot find a solution with these guidelines and you would like personal advice, please feel free to contact our experts.

  • Use POP or IMAP. Using both at the same time on multiple devices causes problems.
  • Use IMAP if you want to be able to read your email on more than one computer (or device).
  • If you want to use multiple programs, use IMAP for each program.
  • The webmail works with IMAP. If you use webmail in addition to your email program, use IMAP.
  • With some mail programs, you can leave an email on the server with POP. Consider IMAP if using this.

Conclusion:

It is possible to use both IMAP and POP protocols at the same time, but not recommended, it often leads to problems.

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