How to send a SMTP email with HTML body using curl

Question

5.00/5 (1 vote)

See more:

Hi,
I am using libcurl to send SMTP emails from a ubuntu server.
I have been asked to change the emails to have a HTML body from a temple stored in a
file.
Is libcurl able to send the HTML body and if so any advice or example on how to
achieve it would be appreciated.
Thank You
Regards

What I have tried:

I have tried putting the HTML in the message but it is not decoded

Posted 20-Nov-18 16:44pm

tracam

Updated 19-Jun-22 0:16am

Add a Solution

Comments

Afzaal Ahmad Zeeshan 21-Nov-18 3:17am

This thread seems to solve a similar problem as yours, https://stackoverflow.com/questions/37610573/how-to-set-mail-body-as-html-in-curl, please see that. Also visit this flag for more information, https://curl.haxx.se/libcurl/c/CURLOPT_READFUNCTION.html

3 solutions

Add a Solution

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Michael Haephrati · Answer 1 · 2019-05-12T08:12:00

Solution 1

This example[^] might help.
Curl fully support HTML in email's body.

Posted 12-May-19 8:12am

Michael Haephrati

Martin Fisher2 · Answer 2 · 2022-06-19T00:16:00

Try this

char *msg = "To: bob@example.com\r\n"
            "From: alice@example.com\r\n"
            "Content-Type: text/html; charset=us-ascii\r\n"
            "Mime-version: 1.0\r\n"
            "\r\n"
            "<html><head>\r\n"
            "<meta http-equiv=\"Content-Type\" content="text/html; charset=us-ascii\">\r\n"
            "</head><body>\r\n"
            "<p>Hi Bob</p>\r\n"
            "</body></html>\r\n"

size_t callback(char *buffer, size_t size, size_t nitems, void *instream) {
    /* you actually need to check that buffer <= size * nitems */
    strcat(buffer, msg);
    return strlen(buffer);
}

curl_easy_setopt(curl, CURLOPT_READFUNCTION, callback);
curl_easy_perform(curl);

Member 15136862 · Answer 3 · 2022-06-16T04:22:00

You must include MIME-Version as well as Content-Type, for example this will work, assuming every line ends with "\r\n".

C++

MIME-Version: 1.0
Date: Thu, 16 Jun 2022 14:12:05 +0000
To: Test <test@gmail.com>
From: Info <info@test.business>
Message-ID: <5083142354314465839@something>
Subject: Post Test 1
Content-Type: text/html; charset="UTF-8"

<h1>Header</h1><b>Bold</b><br><div style="color:#f00">Red text</div>

How to send a SMTP email with HTML body using curl

3 solutions

Solution 1

Solution 3

Solution 2

Add your solution here

Preview 0

How to send a SMTP email with HTML body using curl

3 solutions

Solution 1

Solution 3

Solution 2

Add your solution here

Preview 0

Existing Members

...or Join us