Actually, SMTPs are complicated. If you want to know about how email gets sent around the world, it is very simple to feel stunned. It will assist you direct your email sending, they have placed together a list of most common SMTP server queries to make your work simple. 

An overview of SMTP server

SMTP server is an application that’s basic dedications is to send, receive and communicate the outgoing mail between the email senders and receivers. SMTP server will also have an email address that can be setting by an email application or client that you are utilizing and are commonly formatted as For instance, the SMTP server address in Gmail is and the Send Grid in Twilio is 

Commonly, you can discover your SMTP server address in an account or settings section of your email client. When you transmit an email, the SMTP server executes your email and determines which server to transmit a message to and also communicates the messages to that server. The service provider of inbox recipient such as AOL or Gmail and then downloads a message and also places it in an inbox a recipient. 

Is SMTP server as same as a normal server?

Of course, as like several other servers, the SMTP server processes information to transmit to another server. However, it has very specific purpose of processing the information related to transmitting, receiving and communicating of email. Also, the SMTP server is not essentially on a machine. It is primarily an application that continually operating in the keenness of transmitting a new email. 

Why SMTP servers are more essential?

Without the SMTP server, your email will not even build it to its destination. Once you knockout a send button, your email converts into a sequence of code, which is transferred to a SMTP server. The SMTP server is also able to execute that code and then permit on a message. If the SMTP server was not available there to execute a message, it would be misplaced in conversion. In addition to, the SMTP servers also checks that the outgoing email is from the active account and also act as an initial protection in defencing your inbox from the unlawful email. Also, it will transmit an email rear to the sender, if it cannot even be distributed. This also notifies a sender that they have incorrect email address or their email is being jammed by a receiving server. 

What does the SMTP server perform, when you transmit an email with Twilio Send Grid?

Initially, your email client links to the Twilio Send Grid SMTP server and by using port 25 by default. 

Your email client also has a conversation with the server and initially verifying that the username and password utilized for authentication correspond to an active account and then communicating the message information that includes message content, recipient and sender address. 

The server also considers message information that you collected from your request and then recaps the conversation process in step two with the mail server of a recipient. 

The mail server of a recipient also verifies a sending process, message content and recipient address. It also verifies the sending domain for any possible DNS problems like SPF signs and invalid DKIM. As elongated as there are no problems, the mail server of a recipient will utilize a protocol IMAP or POP3 to recover the email and also bring the messages to its proposed recipient. 

Does the Twilio Send Grid have a test SMTP server?

The Twilio Send Grid usually provides free accounts, which does not even need a credit card to permit. With this Twilio Send Grid free account, they offer you instant access to the Twilio Send Grid SMTP server and also enable you to transmit up to hundred emails per day. The active free account customers can utilize their account to transmit the test messages and trial out their deliverability before upgrading and transmitting the bulks quantities of email.

Do I want to set up the Twilio Send Grid SMTP server before transmitting an email?

Nope, you always want to have an active Twilio Send Grid account and have a capability to utilize the prime username and password authentication within your email application or client.