(Tcl) Send HTML Email with Embedded Image Loaded from Memory

Demonstrates how to compose an HTML email with an embedded image where the image data is loaded directly from memory.

Chilkat Tcl Extension Downloads

Chilkat Tcl Extension Downloads

load ./chilkat.dll

# This example requires the Chilkat API to have been previously unlocked.
# See Global Unlock Sample for sample code.

# First load image data into memory.
# This example loads image data from a file.
# However, your application could get the image data from any other source, such as
# from a database.
set fac [new_CkFileAccess]

set imageBytes [new_CkByteData]

set success [CkFileAccess_ReadEntireFile $fac "qa_data/jpg/starfish.jpg" $imageBytes]

# The mailman object is used for sending and receiving email.
set mailman [new_CkMailMan]

# Use your SMTP server hostname.  This example uses office365, but it could be any SMTP server..
CkMailMan_put_SmtpHost $mailman "outlook.office365.com"
CkMailMan_put_SmtpPort $mailman 587
CkMailMan_put_StartTLS $mailman 1

# Set the SMTP login/password
CkMailMan_put_SmtpUsername $mailman "OFFICE365-SMTP-LOGIN"
CkMailMan_put_SmtpPassword $mailman "OFFICE365-SMTP-PASSWORD"

# Create a new email object
set email [new_CkEmail]

CkEmail_put_Subject $email "HTML Email with Image Loaded from In-Memory Bytes"
CkEmail_put_From $email "Chilkat Support <my-office365-user@mydomain.com>"
CkEmail_AddTo $email "Chilkat Support" "support@chilkatsoft.com"

set contentIdStarfish [CkEmail_addRelatedData $email "starfish.jpg" $imageBytes]
if {[CkEmail_get_LastMethodSuccess $email] != 1} then {
    puts [CkEmail_lastErrorText $email]
    delete_CkFileAccess $fac
    delete_CkByteData $imageBytes
    delete_CkMailMan $mailman
    delete_CkEmail $email
    exit
}

# The src attribute for the image tag is set to the contentIdStarfish:
set sbHtml [new_CkStringBuilder]

CkStringBuilder_Append $sbHtml "<html><body><p>This is an HTML email with an embedded image.</p>"
CkStringBuilder_Append $sbHtml "<p><img src=\"cid:CONTENT_ID_STARFISH\" /></p></body></html>"
set numReplacements [CkStringBuilder_Replace $sbHtml "CONTENT_ID_STARFISH" $contentIdStarfish]

CkEmail_SetHtmlBody $email [CkStringBuilder_getAsString $sbHtml]

set success [CkMailMan_SendEmail $mailman $email]
if {$success != 1} then {
    puts [CkMailMan_lastErrorText $mailman]
} else {
    puts "Mail Sent!"
}


delete_CkFileAccess $fac
delete_CkByteData $imageBytes
delete_CkMailMan $mailman
delete_CkEmail $email
delete_CkStringBuilder $sbHtml