Hi Tom
I hope I'm phrasing this correctly...
I'd like to be able to send an HTML formatted email from the database using the UTL_SMTP
package. I don't see any way of setting the MIME type.
Is this beyond the scope of UTL_SMTP?
thanks in advance!
Ken
and we said...
I asked Tyler Muth (tyler.muth@oracle.com) to answer this one since I knew he already had
the code (we use it on our Oracle Calendar software shipped with the email server to send
reminders for appointments). Tyler provided this answer for us:
...
You are correct in you observation that there is no MIME type parameter in
UTL_SMTP, but this does not limit the types of email you can send. It's
actually very flexible, in that UTL_SMTP allows you to contruct and pass in
the whole email message. What this means to you is that constructing an
HTML message is possible using UTL_SMTP, but your going to have to do some
work to create it.
The folowing is the basic structure of the message you need to construct:
Normal Headers
Content-Type: multipart/alternative;
boundary="some_unique_string_not_in_email"
--some_unique_string_not_in_email
Content-Type: text/plain; charset=us-ascii
Text email message here.
--some_unique_string_not_in_email
Content-Type: text/html; charset=us-ascii
<html>
<head>
<title>some subject</title>
</head>
<body>
Your <b>Html</b> email message here.
</body>
</html>
--some_unique_string_not_in_email--
Ok, that looks hard, but if you use this procedure I wrote, its really quite easy, it
does all of the work for you:create or replace procedure html_email(
p_to in varchar2,
p_from in varchar2,
p_subject in varchar2,
p_text in varchar2 default null,
p_html in varchar2 default null,
p_smtp_hostname in varchar2,
p_smtp_portnum in varchar2)
is
l_boundary varchar2(255) default 'a1b2c3d4e3f2g1';
l_connection utl_smtp.connection;
l_body_html clob := empty_clob; --This LOB will be the email message
l_offset number;
l_ammount number;
l_temp varchar2(32767) default null;
begin
l_connection := utl_smtp.open_connection( p_smtp_hostname, p_smtp_portnum );
utl_smtp.helo( l_connection, p_smtp_hostname );
utl_smtp.mail( l_connection, p_from );
utl_smtp.rcpt( l_connection, p_to );
l_temp := l_temp || 'MIME-Version: 1.0' || chr(13) || chr(10);
l_temp := l_temp || 'To: ' || p_to || chr(13) || chr(10);
l_temp := l_temp || 'From: ' || p_from || chr(13) || chr(10);
l_temp := l_temp || 'Subject: ' || p_subject || chr(13) || chr(10);
l_temp := l_temp || 'Reply-To: ' || p_from || chr(13) || chr(10);
l_temp := l_temp || 'Content-Type: multipart/alternative; boundary=' ||
chr(34) || l_boundary || chr(34) || chr(13) ||
chr(10);
----------------------------------------------------
-- Write the headers
dbms_lob.createtemporary( l_body_html, false, 10 );
dbms_lob.write(l_body_html,length(l_temp),1,l_temp);
----------------------------------------------------
-- Write the text boundary
l_offset := dbms_lob.getlength(l_body_html) + 1;
l_temp := '--' || l_boundary || chr(13)||chr(10);
l_temp := l_temp || 'content-type: text/plain; charset=us-ascii' ||
chr(13) || chr(10) || chr(13) || chr(10);
dbms_lob.write(l_body_html,length(l_temp),l_offset,l_temp);
----------------------------------------------------
-- Write the plain text portion of the email
l_offset := dbms_lob.getlength(l_body_html) + 1;
dbms_lob.write(l_body_html,length(p_text),l_offset,p_text);
----------------------------------------------------
-- Write the HTML boundary
l_temp := chr(13)||chr(10)||chr(13)||chr(10)||'--' || l_boundary ||
chr(13) || chr(10);
l_temp := l_temp || 'content-type: text/html;' ||
chr(13) || chr(10) || chr(13) || chr(10);
l_offset := dbms_lob.getlength(l_body_html) + 1;
dbms_lob.write(l_body_html,length(l_temp),l_offset,l_temp);
----------------------------------------------------
-- Write the HTML portion of the message
l_offset := dbms_lob.getlength(l_body_html) + 1;
dbms_lob.write(l_body_html,length(p_html),l_offset,p_html);
----------------------------------------------------
-- Write the final html boundary
l_temp := chr(13) || chr(10) || '--' || l_boundary || '--' || chr(13);
l_offset := dbms_lob.getlength(l_body_html) + 1;
dbms_lob.write(l_body_html,length(l_temp),l_offset,l_temp);
----------------------------------------------------
-- Send the email in 1900 byte chunks to UTL_SMTP
l_offset := 1;
l_ammount := 1900;
utl_smtp.open_data(l_connection);
while l_offset < dbms_lob.getlength(l_body_html) loop
utl_smtp.write_data(l_connection,
dbms_lob.substr(l_body_html,l_ammount,l_offset));
l_offset := l_offset + l_ammount ;
l_ammount := least(1900,dbms_lob.getlength(l_body_html) - l_ammount);
end loop;
utl_smtp.close_data(l_connection);
utl_smtp.quit( l_connection );
dbms_lob.freetemporary(l_body_html);
end;
/
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