![]() Most email providers offer mail client services to their users. Is an email provider a mail client or a mail server? Similarly, a user may write and address an email to its intended recipient (or recipients), but the mail server, like the postal worker, is responsible for accepting the message, transferring it to an incoming mail server, then delivering it to the correct inbox, where it is stored. Finally, another postal worker delivers the letter to Carol’s mailbox, where it can be stored until they are ready to retrieve it. A postal worker retrieves the letter from the mailbox and delivers it to a post office, where it is sorted and transferred to the correct location. Alice addresses the letter to Carol, then leaves it in their mailbox. To illustrate this difference, imagine that Alice wants to send Carol a letter. Mail servers, meanwhile, are software programs that use email protocols to move email messages between mail clients. A mail client is an application that allows users to retrieve, store, and format emails to be sent. While mail clients and mail servers are both used to send and receive email messages, they are not the same. What is the difference between a mail client and a mail server? * An email envelope contains the sender and recipient’s email addresses, among other data SMTP needs in order to transfer an email message from server to server. Once the MX record returns the appropriate destination, the MDA uses an incoming mail protocol, like the Internet Message Access Protocol (IMAP) or Post Office Protocol Version 3 (POP3), to retrieve the email message from the mail server and deliver it to the specified mail client (or clients).įor an in-depth explanation of the email delivery process, see What is email? The MX record tells the server how to route the message to its final destination. Then, it locates a mail delivery agent by querying mail exchange (MX) records. SMTP does this by using the Domain Name System (DNS) to translate the recipient’s domain into an IP address. When sending an email from one client to another, the MTA uses an outgoing mail protocol, like the Simple Mail Transfer Protocol (SMTP), to check the sender’s email envelope* data and determine where the message needs to be sent. Mail servers deliver email messages between mail clients by using email protocols, which tell the server how to process incoming requests, where to forward the messages, and how to deliver them to the intended mail client. MTAs retrieve outgoing email messages from the sender’s mail client, then deliver them to MDAs, which are responsible for temporarily storing and delivering email messages to the recipient’s mail client. ![]() How do mail servers deliver email messages?Įmail messages are sent and received using two types of mail servers: outgoing mail servers, or *mail transfer agents* (MTA), and incoming mail servers, or *mail delivery agents* (MDA). Some of the most widely-used mail clients include Microsoft Outlook, Gmail, and Apple Mail. ![]() A mail client (also called an *email client* or *message user agent*) is a web-based or desktop application that receives and stores email messages. Mail servers send messages from one mail client to another. Without them, users would have no way of transferring those messages to and from other mail clients. Mail servers play a crucial role in the email delivery process. Often, it is used as a blanket term for both mail transfer agents (MTA) and mail delivery agents (MDA), each of which perform a slightly different function. Secure endpoints for your remote workforce by deploying our client with your MDM vendorsĮnhance on-demand DDoS protection with unified network-layer security & observabilityĬonnect to Cloudflare using your existing WAN or SD-WAN infrastructureĪ mail server (sometimes called an email server) is a software program that sends and receives email. Get frictionless authentication across provider types with our identity partnershipsĮxtend your network to Cloudflare over secure, high-performing links Integrate device posture signals from endpoint security programs We work with partners to provide network, storage, & power for faster, safer delivery We partner with leading cyber insurers & incident response providers to reduce cyber risk We partner with an alliance of providers committed to reducing data transfer fees ![]() Use insights to tune Cloudflare & provide the best experience for your end users Apply to become a technology partner to facilitate & drive our innovative technologies ![]()
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