How To Send Email Via Smtp – You can send transactional emails to customers on your website using an email client or through an SMTP service. You can then view the email history and unsubscribe list in your account.
In this article, we will talk about where to find the license data in this SMTP service and how to configure the SMTP server in Mozilla Thunderbird and Outlook.
How To Send Email Via Smtp
Go to your account’s “SMTP Settings” > “General” tab and copy your SMTP authorization values: server address, port, login, and password.
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You can access the SMTP settings after your profile is activated the message “Your profile is being controlled” will disappear from the page and you will receive an email informing you that your account has been approved and activated done
Click More settings, and in the window that opens, go to the “Outgoing server” tab, select the “Log in with” option and from the SMTP settings of your account in the “Username” and “Password” sections Paste the login and password.
Your password must be 8 to 48 characters long, contain at least one uppercase letter, one lowercase letter, and one number.
It looks like you already have an account if you think this is a mistake.
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We’ll break down SMTP’s responsibilities, look at the connection between the client’s SMTP and the recipient’s SMTP server, and finally, we’ll use a terminal to send email by issuing SMTP commands directly to the SMTP server.
If you’ve ever configured an email client, you may have seen the terms IMAP, POP, and SMTP.While IMAP and POP are the protocols used to receive email from a mailbox, SMTP is strictly is the forwarding protocol. We will take a closer look at IMAP and POP in a separate article.
SMTP is part of the application layer of the TCP/IP protocol and typically operates on port 25. It uses a process called “store and forward” which is used to forward your email to different networks. Within the SMTP protocol, there are small software services called mail transfer agents that help manage the transmission of mail and its final delivery to recipient mailboxes. SMTP not only defines this entire communication flow, it can also support relaying of e-mail to the sender site, receiver site or any intermediate server.
Configure Email Settings
TLDR: SMTP defines a communication protocol that specifies how email travels from your computer’s email transfer agent, possibly through different networks, to the SMTP server’s email transfer agent.
User Agent (UA): An application used to send and receive electronic mail (Outlook, Mozilla, etc.) that helps manage the delivery of mail to the user’s mailbox. Often MTAs help maintain a mail queue so delivery attempts can be scheduled to be repeated if the remote server is unavailable. MTAs often have special software called mail delivery agents or message delivery agents (MDAs) that are responsible for delivering email messages to local recipient mailboxes, while MTAs focus more on sending email from an SMTP server. focuses on On the SMTP server.
When a user sends email through a user agent—for example, the Apple Mail app—the client’s SMTP process opens a TCP connection on port 25 to an SMTP process running somewhere on the server (for example smtp.gmail.com). In the initial handshake, the client and server SMTP process engage in a short request-response dialog to send email. We will take a closer look at this flow shortly.
Take this real use case of the SMTP protocol (this scenario is probably sending emails within the same organization):
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In reality, however, an email message may pass through multiple intermediary MTAs (aka mail gateways) to the correct recipient.
An additional advantage of email gateways is that they can handle electronic mail provided by any other protocol and convert it to SMTP format before it is sent or vice versa.
We’ll take a closer look at the actual commands and payloads sent between the client and server SMTP processes in a moment. Before we do that, let’s see how the body of the email is structured.
An email consists of two parts – an envelope and a message/body – just like a traditional piece of mail.
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Envelopes contain sender and recipient fields as well as some additional metadata (such as timestamps, MIME attributes, etc.) The envelope sections are often formatted as follows:
Let’s see what modern titles look like. Here is the title of the promotional email from Caviar:
As you can see header fields can contain more than sender and receiver information; These fields are only minimum requirements.
Any text that follows the envelope is classified as the body. The body of an email is user-generated content. The body section usually ends with a null link, a blank line, or any number of possible terminating characters (such as “.”).
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The envelope is usually sent separately from the body of the email. SMTP servers will first attempt to verify the sender/recipient information in the headers before they consider transmitting the email body.
These fields are sent to the SMTP server using the MAIL FROM and RCPT TO commands (we’ll take a closer look at these commands in a moment).
On the recipient’s SMTP server, it will periodically check the contents of its mailbox for new emails and deliver or deliver them as needed.
As mentioned earlier, SMTP is part of the application layer of the TCP/IP protocol. Consequently, it should come as no surprise that SMTP uses DNS to communicate the IP address of the SMTP server.
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Once the recipient’s IP address is obtained, the client’s SMTP server can connect to the remote SMTP server through a short sequence of sequential commands.
HELO – Helps identify the client’s SMTP process on the SMTP server and is usually followed by a fully qualified hostname. This is usually sent once per session. Once this authentication step is complete, the client’s SMTP process can send as many emails as they want.
From Mail – The server detects the SMTP sender’s email address (for example, from a field in the email).
After the RCPT TO: mail FROM command, the client’s SMTP server can issue one or more RCPT TO commands to specify the email addresses of all recipients.
What Is Smtp (simple Mail Transfer Protocol)?
Data: This is the prefix command in the body of the email. This is a command that tells the SMTP server that it needs to prepare itself to receive some ASCII content that is either a blank line or a “.” ends with
We will soon see these commands in action using the terminal, but it is important to know that these commands are sent as ASCII text that allows the creation of mail clients and servers on any platform.
Although the list of SMTP commands is larger than this list, HELP, MAIL FROM, RCPT TO, DATA and QUIT are the main commands.
Once the initial handshake is complete (HELO step), the SMTP session is started. The client first submits the sender and recipient email addresses separately (think) to the SMTP server. After each client command, the server will respond by sending “250 OK” if it received and verified the command. Otherwise, it will send an error message, usually with “550” as the error number.
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After receiving this two-part confirmation, the client’s SMTP process submits the body of the email to the server.
Here’s an example of the full flow taken from Wikipedia, take a moment to look at it – we’ll simulate this exact flow later using Telnet, Python and Terminal:
S: 220 smtp.example.com ESMTP Postfix C: HELO relay.example.com S: 250 smtp.example.com, Nice to see you C: From mail: S: 250 OK: RCPT TO : S: 250 Ok C: RCPT TO: S: 250 Ok C: DATA S: 354 END DATA WITH . C: From: “Bob Example” C: To: Alice Example C: Cc: [email protected] C: Date: Tuesday, January 15 2008 16 @02: 43 -0500 C: Subject: Test Message C: C: Hello Alice. A: This is a test message with 5 header fields and 4 lines in the message body. C: Your friend, C: Bob C:. S: 250 OK: align as 12345 C: S QUIT S: 221 BY
We got 250 confirmation from the server, so we are ready to go to the next step. Provide envelope header information – sender and receiver.
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“354 end data with .” tells you
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