Batch sendmail

Batch Sendmail!

Batch Sendmail is a feature in Sendmail that allows you to send multiple emails at once, without having to manually enter each recipient's email address. This can be very useful when you need to send the same email to a large number of recipients, such as in a marketing campaign or a notification to a group of users.

Here's an example of how to use Batch Sendmail:

Step 1: Create a file with the recipient email addresses

Create a text file (e.g., recipients.txt) with one email address per line. For example:

[email protected]
[email protected]
[email protected]
...

Step 2: Create a sendmail command

Create a sendmail command that includes the -i option to specify the input file, and the -f option to specify the sender's email address. For example:

sendmail -i recipients.txt -f [email protected]

Step 3: Run the sendmail command

Run the sendmail command in your terminal or command prompt. Sendmail will read the recipient email addresses from the file and send the email to each recipient.

Example Sendmail Command:

sendmail -i recipients.txt -f [email protected] -s "Subject: Test Email" -b "Body of the email"

This command will send an email with the subject "Test Email" and the body "Body of the email" to each recipient listed in the recipients.txt file.

Tips and Variations:

• You can use a different file format, such as a CSV file, if you prefer.
• You can use the -c option to specify a custom header for the email.
• You can use the -a option to specify an attachment file.
• You can use the -t option to specify a template file for the email body.
• You can use the -v option to enable verbose mode, which can be helpful for debugging.

Security Considerations:

• Make sure to use a secure sender email address and password.
• Make sure to use a secure connection (e.g., SSL/TLS) when sending emails.
• Be careful when sending emails to large numbers of recipients, as this can be a potential security risk.