![]() ![]() Step 5: Click Save Changes at the bottom of the page. Step 4: In the POP download section, select Enable POP for all mail or Enable POP for mail that arrives from now on. Step 3: Go to the Forwarding and POP/IMAP tab. Step 2: Go to Settings in the top right-hand corner. POP lets you bring multiple email accounts together into one inbox.Īdditional Reading: Gmail SMTP Settings How to Set up Pop in Gmail You save on storage spaceīecause your emails are only downloaded temporarily and then deleted from the server, you can save on valuable storage space. You’ll only need access to an internet connection to send or receive emails. No need for an internet connectionīecause mail is stored locally, you can access your email without an internet connection. When you use POP, you will see the following benefits: 1. In other words, POP is great if you want to access your emails while you’re offline, but not ideal for those wanting to access their email account from different devices. So, whenever you delete a message from your inbox or a folder, or send a new message, you won’t be able to see that this has happened if you access the same account from a different device. On the other hand, POP email protocol downloads all email messages from the mail server onto the email program on your device, and then deletes all the downloaded messages from the server. IMAP stores all your messages and email folders on the server, which means that every time you log on, regardless of which device, your emails and folders will be accessible. This might depend on the mail program on their computer, the mobile device they use, or the type of access they need.įor example, if you only use Gmail in your browser, then accessing Gmail via the IMAP protocol should be sufficient. It’s up to the user to determine which suits them best. It also offers Post Office Protocol (POP) mail server access.īoth IMAP and POP mail servers both handle email messages, but in slightly different ways. Java is a registered trademark of Oracle and/or its affiliates.Gmail, Google’s internet-based email service, runs on the Internet Message Access Protocol (IMAP) system. For details, see the Google Developers Site Policies. The Libraries and Samples page provides code samples in a variety of popular languages using the SASL XOAUTH2 mechanism with either IMAP or SMTP.Įxcept as otherwise noted, the content of this page is licensed under the Creative Commons Attribution 4.0 License, and code samples are licensed under the Apache 2.0 License. In addition to the SASL XOAUTH2 protocol documentation, you may also want to read Using OAuth 2.0 to Access Google APIs for further information on implementing an OAuth 2.0 client. As long as these libraries support the Simple Authentication and Security Layer (SASL), they should be compatible with the SASL XOAUTH2 mechanism supported by Gmail. Libraries and SamplesĪccessing mail using IMAP or POP and sending mail using SMTP is often done using existing IMAP and SMTP libraries for convenience. If using OAuth, make sure that the access token used is valid (if you try to use an access token older than 1 hour, it might be invalid). After that, the client can reconnect, authenticate again, and continue. When the time elapses and the session expires, Gmail closes the connection with a message saying that the session expired. A session in this context is one continuous TCP connection. If the session was authenticated using OAuth credentials, it's limited to about the validity period of the access token used (usually 1 hour). Gmail IMAP sessions are limited to about 24 hours. Gmail POP sessions are limited to about 7 days. If your client begins with plain text, before issuing the STARTTLS command, use port 465 (for SSL), or port 587 (for TLS). The outgoing SMTP server,, supports TLS. Incoming connections to the IMAP server at :993 and the POP server at :995 require SSL. The SASL XOAUTH2 protocol documentation describes the SASL XOAUTH2 mechanism in great detail, and libraries and samples which have implemented the protocol are available. The SASL XOAUTH2 mechanism enables clients to provide OAuth 2.0 credentials for authentication. IMAP, POP, and SMTP use the standard Simple Authentication and Security Layer (SASL), using the built-in the native IMAP AUTHENTICATE, POP AUTH, and SMTP AUTH commands, to authenticate users. The Gmail IMAP, POP, and SMTP servers have been extended to support authorization via the industry-standard OAuth 2.0 protocol. For non-Gmail clients, Gmail supports the standard IMAP, POP, and SMTP protocols. ![]()
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