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SMTP stands for Simple Mail transfer protocol. The main objective of this tutorial is to obtain mail notification upon certain activity. BBB will send the mail with predefined message to registered email id when some activity takes place.In this tutorial, simple alert notification is sent to specific mail ID. Before running application, you need to establish internet connection with Beaglebone black. You can choose either Ethernet connection or WI-FI device." /> <meta property="og:url" content="https://www.engineersgarage.com/sending-mail-from-beaglebone-black-part-9-15/" /> <meta property="og:site_name" content="Engineers Garage" /> <meta property="article:publisher" content="https://www.facebook.com/engineersgarage" /> <meta property="og:image" content="https://www.engineersgarage.com/wp-content/uploads/2019/07/Screenshot-Mail-Sent-Beaglebone-Black.jpg" /> <meta property="og:image:width" content="855" /> <meta property="og:image:height" content="641" /> <meta property="og:image:type" content="image/jpeg" /> <meta name="author" content="Ashish Vara" /> <meta name="twitter:card" content="summary_large_image" /> <meta name="twitter:creator" content="@EngineersGarage" /> <meta name="twitter:site" content="@EngineersGarage" /> <meta name="twitter:label1" content="Written by" /> <meta name="twitter:data1" content="Ashish Vara" /> <meta name="twitter:label2" content="Est. reading time" /> <meta name="twitter:data2" content="4 minutes" /> <script type="application/ld+json" class="yoast-schema-graph">{"@context":"https://schema.org","@graph":[{"@type":"Article","@id":"https://www.engineersgarage.com/sending-mail-from-beaglebone-black-part-9-15/#article","isPartOf":{"@id":"https://www.engineersgarage.com/sending-mail-from-beaglebone-black-part-9-15/"},"author":{"name":"Ashish Vara","@id":"https://www.engineersgarage.com/#/schema/person/0f1926e22b130018be534bce43f896d3"},"headline":"Sending Mail from Beaglebone Black (Part 9/15)","datePublished":"2019-07-04T23:27:39+00:00","dateModified":"2023-05-25T17:46:36+00:00","mainEntityOfPage":{"@id":"https://www.engineersgarage.com/sending-mail-from-beaglebone-black-part-9-15/"},"wordCount":696,"commentCount":0,"publisher":{"@id":"https://www.engineersgarage.com/#organization"},"image":{"@id":"https://www.engineersgarage.com/sending-mail-from-beaglebone-black-part-9-15/#primaryimage"},"thumbnailUrl":"https://www.engineersgarage.com/wp-content/uploads/2019/07/Screenshot-Mail-Sent-Beaglebone-Black.jpg","articleSection":["BeagleBone","Electronic Projects"],"inLanguage":"en-US","potentialAction":[{"@type":"CommentAction","name":"Comment","target":["https://www.engineersgarage.com/sending-mail-from-beaglebone-black-part-9-15/#respond"]}]},{"@type":"WebPage","@id":"https://www.engineersgarage.com/sending-mail-from-beaglebone-black-part-9-15/","url":"https://www.engineersgarage.com/sending-mail-from-beaglebone-black-part-9-15/","name":"Sending Mail from Beaglebone Black (Part 9/15)","isPartOf":{"@id":"https://www.engineersgarage.com/#website"},"primaryImageOfPage":{"@id":"https://www.engineersgarage.com/sending-mail-from-beaglebone-black-part-9-15/#primaryimage"},"image":{"@id":"https://www.engineersgarage.com/sending-mail-from-beaglebone-black-part-9-15/#primaryimage"},"thumbnailUrl":"https://www.engineersgarage.com/wp-content/uploads/2019/07/Screenshot-Mail-Sent-Beaglebone-Black.jpg","datePublished":"2019-07-04T23:27:39+00:00","dateModified":"2023-05-25T17:46:36+00:00","breadcrumb":{"@id":"https://www.engineersgarage.com/sending-mail-from-beaglebone-black-part-9-15/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https://www.engineersgarage.com/sending-mail-from-beaglebone-black-part-9-15/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https://www.engineersgarage.com/sending-mail-from-beaglebone-black-part-9-15/#primaryimage","url":"https://www.engineersgarage.com/wp-content/uploads/2019/07/Screenshot-Mail-Sent-Beaglebone-Black.jpg","contentUrl":"https://www.engineersgarage.com/wp-content/uploads/2019/07/Screenshot-Mail-Sent-Beaglebone-Black.jpg","width":855,"height":641,"caption":""},{"@type":"BreadcrumbList","@id":"https://www.engineersgarage.com/sending-mail-from-beaglebone-black-part-9-15/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https://www.engineersgarage.com/"},{"@type":"ListItem","position":2,"name":"Sending Mail from Beaglebone Black (Part 9/15)"}]},{"@type":"WebSite","@id":"https://www.engineersgarage.com/#website","url":"https://www.engineersgarage.com/","name":"Engineers Garage","description":"Electronic Projects, Electrical Engineering Resources, Makers Articles and Product News","publisher":{"@id":"https://www.engineersgarage.com/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://www.engineersgarage.com/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https://www.engineersgarage.com/#organization","name":"Engineer's Garage - 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</p></header><div class="entry-content"><div class="addtoany_share_save_container addtoany_content addtoany_content_top"><div class="a2a_kit a2a_kit_size_16 addtoany_list" data-a2a-url="https://www.engineersgarage.com/sending-mail-from-beaglebone-black-part-9-15/" data-a2a-title="Sending Mail from Beaglebone Black (Part 9/15)"><a class="a2a_button_facebook" href="https://www.addtoany.com/add_to/facebook?linkurl=https%3A%2F%2Fwww.engineersgarage.com%2Fsending-mail-from-beaglebone-black-part-9-15%2F&linkname=Sending%20Mail%20from%20Beaglebone%20Black%20%28Part%209%2F15%29" title="Facebook" rel="nofollow noopener" target="_blank"></a><a class="a2a_button_x" href="https://www.addtoany.com/add_to/x?linkurl=https%3A%2F%2Fwww.engineersgarage.com%2Fsending-mail-from-beaglebone-black-part-9-15%2F&linkname=Sending%20Mail%20from%20Beaglebone%20Black%20%28Part%209%2F15%29" title="X" rel="nofollow noopener" target="_blank"></a><a class="a2a_button_linkedin" 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href="https://www.addtoany.com/share"></a></div></div><p style="text-align: justify;">This tutorial explains how to send mail from Beaglebone black using SMTP protocol. SMTP stands for Simple Mail transfer protocol. The main objective of this tutorial is to obtain mail notification upon certain activity. BBB will send the mail with predefined message to registered email id when some activity takes place. Network (Internet) connectivity is required for this tutorial. You can also attach some file with mail. Program is written in python script with SMTP library and adafruit GPIO library.</p> <p style="text-align: justify;"><strong style="font-size: 12.8px;">Required Tools</strong><span style="font-size: 12.8px;">:</span></p> <ul> <li style="text-align: justify;">Beaglebone Black</li> <li style="text-align: justify;">Push button</li> <li style="text-align: justify;">LED</li> <li style="text-align: justify;">1 kΩ Resistor</li> <li style="text-align: justify;">330 Ω resistor</li> </ul> <p style="text-align: justify;">Breadboard</p> <ul> <li style="text-align: justify;">Female to Female connectors</li> </ul> <p style="text-align: justify;"><strong style="font-size: 12.8px;">Setup of Software environment</strong></p> <p style="text-align: justify;">Install the latest python version in BBB as explained in tutorial <strong>How to make first python program with Beaglebone Black. </strong>Adafruit python –GPIO library is already installed but you can also manually install the library named adafruit_BBIO. SMTP library is installed with python but check once before making application.</p> <p style="text-align: justify;"><strong style="font-size: 12.8px;">Working</strong></p> <p style="text-align: justify;">In this tutorial, simple alert notification is sent to specific mail ID. Before running application, you need to establish internet connection with Beaglebone black. You can choose either Ethernet connection or WI-FI device. This tutorial uses Ethernet cable to provide internet connection. When switch is pressed, mail is sent to specific email ID with predefined message. When script is running, program enters into a continuous loop. Led turns ON when switch is pressed and turns OFF after the mail has been sent from BBB.</p> <p style="text-align: justify;">When mail is sent following message is displayed on command prompt:</p> <p style="text-align: justify;"><strong>Mail has been sent</strong></p> <p style="text-align: justify;">Press the <strong>ctrl+C</strong> to stop the execution of program form SSH command terminal.</p> <p style="text-align: justify;">Open receiver’s mail box and check if the message is received or not.</p> <p style="text-align: center;"><img decoding="async" title="Screenshot of Mail Sent from Beaglebone Black" src="https://www.engineersgarage.com/wp-content/uploads/2019/07/Screenshot-Mail-Sent-Beaglebone-Black.jpg" alt="Screenshot of Mail Sent from Beaglebone Black" /></p> <p style="text-align: center;"><span style="font-family: verdana,geneva,sans-serif;"><em>Fig. 1: Screenshot of Mail Sent from Beaglebone Black</em></span></p> <p><strong>Description </strong></p> <p>Let’s first prepare the circuit connection. Take a breadboard and provide VCC and ground from BBB to breadboard line. Connect Supply 3.3 V from pin number 3<sup>rd</sup> of header P9 and ground from pin number 2<sup>nd</sup> of header P8. Connect the negative terminal of LED with ground and the positive one with 330 Ohm resistor.. Connect another end of resistor with pin number 10<sup>th</sup> of header P8. Push button has two terminals. Any one of them connects with ground. Provide the VCC 3.3 V through 1k ohm resistor to another terminal of push button. Connect the common end of resistor and push button with pin number 11<sup>th</sup> of header P8. Provide the supply to Beaglebone black by connecting it with PC through USB cable. Now your circuit is prepared.</p> <p>Open the command terminal and access Beaglebone black through SSH as explained in <strong>getting started with Beaglebone black. </strong>Create a new file using <strong><em>touch</em></strong> command with <strong><em>.py</em></strong> extension (i.e. led.py). Open the file with any text editor (i.e. nano, vim etc.) and write a code in python language.</p> <p><strong style="font-size: 12.8px;">SMTP Setup</strong></p> <p><span style="font-size: 12.8px;">You can send email using SMTP across the internet which handles the service over TCP/IP network. Two things are required to establish connection with mail server:</span></p> <ol> <li>Mail server address</li> <li>Port number</li> </ol> <p>SMTP library has inbuilt function to setup the configuration for sending mail. Set the mail address and port number as following function:</p> <p><strong style="font-size: 12.8px;">smtplib.SMTP (“smtp.gmail.com”, 587)</strong></p> <p><span style="font-size: 12.8px;">Here I have used Gmail server with appropriate port number for sending mail. First argument is mail server address and second argument is port number.</span></p> <p><span style="font-size: 12.8px;">After connecting with mail server, BBB (act as a client) indentifies and establishes secure connection by following functions respectively.</span></p> <p style="margin-left: .5in;"><strong>ehlo( ) – Enable and identify connection with mail server</strong></p> <p style="margin-left: .5in;"><strong>starttls( ) – provide secure connection to transfer data</strong></p> <p><span style="font-size: 12.8px;">Configure sender email ID, password, receiver email ID and message which you want to send to the receiver.</span></p> <p><strong style="font-size: 12.8px;">To = “Receiver’s mail ID”</strong></p> <p><strong> From = “Sender’s mail ID”</strong></p> <p><strong> Password = “Sender’s mail ID password”</strong></p> <p><strong> message = “Alert!!! Button is pressed”</strong></p> <p>You can write message as per your wish.</p> <p>Login in to the server with specific ID and password. Send the message on receiver’s email ID and close the connection.</p> <p><strong>GPIO configuration</strong></p> <p>I have already explained GPIO setup in<strong> Switch interfacing with Beaglebone black. </strong></p> <p><strong style="font-size: 12.8px;">Run the script from terminal:</strong></p> <p>Enter the following command with file name from command prompt:</p> <p><strong> python filename.py</strong></p> <p>i.e. python sendmail.py</p> <h3>Project Source Code</h3><div style="background-color:#000000;color:#ffffff"><pre><p>###</p><p></p> <pre> </pre> <div>import smtplib</div><div>import time</div><div> </div><div>import Adafruit_BBIO.GPIO as GPIO</div><div> </div><div>LED = "P8_10"</div><div>BUTTON = "P8_11"</div><div> </div><div> </div><div>GPIO.setup ( LED , GPIO.OUT)</div><div>GPIO.setup ( BUTTON , GPIO.IN) </div><div> </div><div>GPIO.output ( LED , GPIO.LOW)</div><div> </div><div>while True:</div><div>Button_State = GPIO.input (BUTTON)</div><div>if Button_State == 0:</div><div>GPIO.output ( LED , GPIO.HIGH)</div><div>time.sleep (1)</div><div>server = smtplib.SMTP("smtp.gmail.com" , 587)</div><div>server.ehlo()</div><div>server.starttls()</div><div>server.ehlo()</div><div>To = "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="36645355535f405344765f521855595b">[email protected]</a>"</div><div>From = "<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="4d1e282329283f0d2429632e2220">[email protected]</a>"</div><div>Password = "Password"</div><div>message = "Alert!!! Button is pressed"</div><div> </div><div>server.login( From , Password)</div><div>server.sendmail( From , To, message)</div><div>server.quit()</div><div>print("Mail has been sent")</div><div> </div><div>GPIO.output ( LED , GPIO.LOW)</div><p>###</p><p> </p></pre></div><br /><h3>Circuit Diagrams</h3><div style="background-color:#ffffff;color:#000000"><table><tr><td><a href='https://www.engineersgarage.com/wp-content/uploads/2019/07/Circuit-Diagram-Beaglebone-Black.jpg' target='_blank'><b>Circuit-Diagram-Beaglebone-Black</b></a></td> <td><a href='https://www.engineersgarage.com/wp-content/uploads/2019/07/Circuit-Diagram-Beaglebone-Black.jpg' target='_blank'><img src='https://www.engineersgarage.com/wp-content/uploads/2019/07/Circuit-Diagram-Beaglebone-Black.jpg' width='250'</a></td></tr></table></div><br /><h3>Project Video<h3><div class="article-video"><iframe width="560" height="315" src="https://www.youtube.com/embed/KWvW6sxnFIc" frameborder="0" allowfullscreen></iframe></div><hr><span class="entry-categories">Filed Under: <a href="https://www.engineersgarage.com/electronic-projects/beaglebone-electronic-projects/" rel="category tag">BeagleBone</a>, <a href="https://www.engineersgarage.com/electronic-projects/" rel="category tag">Electronic Projects</a></span><br /><br /> <hr><hr /> <nav class="navigation post-navigation" aria-label="Next Article"> <h2 class="screen-reader-text">Next Article</h2> <div class="nav-links"><div class="nav-previous"><a href="https://www.engineersgarage.com/exploring-underwaters-with-raspberry-pi/" rel="prev">← Previous Article</a></div><div class="nav-next"><a href="https://www.engineersgarage.com/web-cam-interfacing-with-beaglebone-black-part-10-15/" rel="next">Next Article →</a></div></div> </nav><hr /></div><footer class="entry-footer"></footer></article> <div id="respond" class="comment-respond"> <h3 id="reply-title" class="comment-reply-title"><span style="font-size:16px">Questions related to this article?<br />👉Ask and discuss on <a href="https://electro-tech-online.com?utm_source=EG&utm_medium=link&utm_campaign=TellUsWhatYouThink&utm_content=article12281&utm_term=forum" target="_blank" rel="nofollow noopener" style="color:red">Electro-Tech-Online.com</a> and <a href="https://edaboard.com?utm_source=EG&utm_medium=link&utm_campaign=TellUsWhatYouThink&utm_content=article12281&utm_term=forum" target="_blank" rel="nofollow noopener" style="color:red">EDAboard.com</a> forums.</span><br /><br /><hr />Tell Us What You Think!! 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