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How to convert a POP email account to IMAP

Most email providers let you choose between two ways to get your messages. You can have a POP (Post Office Protocol) account that downloads all your messages to your Mac, iPhone or iPad. Or, you can have an IMAP (Internet Message Access Protocol) account that leaves some or all of your messages up on the mail server so you can access them from any device. For example, with a POP account, if you check email on your iPhone, the messages downloaded there will only be there; when you get back to your Mac, you won’t see them in your inbox. With IMAP, they’ll be on all your devices.

If you’ve been using a POP account, but have grown frustrated with inaccessible messages, you can usually convert your account to IMAP. Most hosting companies and providers offer both options. However, making this conversion requires that you take precautions so you don’t lose any messages. Here’s how to make the switch safely:

1. Check with your email host

If you manage your email account yourself, check on your hosting company’s dashboard to make sure you can use IMAP. (It’s very rare that this is not available.) If you get email through your business or school, check with the IT department. Find out what settings you will need to access your email as an IMAP account, and whether anything needs to be changed on the server side. If you use Gmail, this help page will tell you how to change your Gmail account from POP to IMAP. (You have to enable IMAP on the Gmail website.)

2. Protect the message you’ve already downloaded

The problem is, this means that any folders that are on your Mac may get overwritten, or deleted, if you don’t save their messages before making the switch. So, in Mail, choose Mailbox -> New Mailbox, and, with the location as On My Mac, create a new mailbox. Call it something like My Old Inbox. When you’ve done this, move all the messages currently in your Inbox to this folder. Do the same for your Sent Mail folder, and any Drafts you may have. Once this is done, you can change the settings for your email account.

3. Find your IMAP settings

Either your hosting company, your IT department, or your email provider will provide the settings you need to switch your account over to IMAP. For example, for Gmail, you will need to know the new Incoming Mail Server (imap.gmail.com), but your outgoing mail server won’t change. In most cases, you will just need to change the prefix in the Incoming Mail Server setting from pop to imap. Write these down. You'll need them in Step 5.

4. Disable your POP account

In Mail, choose Preferences -> Accounts, click on the name of your POP account, then on Advanced, then uncheck Enable this account.

5. Create a new IMAP email account

In Mail, you can’t change an email account from POP to IMAP. Instead, you need to create a new account. Choose File -> Add Account, and enter the information that you obtained in step 3 above.

6. Check your email

If you entered the correct information, your new IMAP account should work right away. You will see an Inbox folder that is on the email server. Copy the messages you stored in your old inbox folder in step 2 to that folder, and they will be copied to your email server, so they will now be accessible from all your devices. Do the same for any sent messages or drafts.

Now that you have an IMAP account on your Mac, use the same settings to access your messages on another Mac, or on your iOS device(s). You can sync the email account via iTunes, or on your iPad or iPhone, enter the necessary information in the Settings app, in the Mail, Contacts, Calendars section.

If you create more folders to store messages you’ll see them on all your devices. To do this, choose Mailbox -> New Mailbox, then in the popup menu at the top of the dialog box, choose the name of your email account. The folder will be created on your mail server, and any messages you store in that folder will sync to all your devices.

IMAP is much better for managing email across multiple devices. Change your old POP accounts to IMAP now so you can have access to your email at all times.

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