Q1. How do you send an email with attachments using Spring?
Use
Example:
MimeMessageHelper with MimeMessage.Example:
MimeMessage message = mailSender.createMimeMessage();
MimeMessageHelper helper = new MimeMessageHelper(message, true);
helper.setTo("to@example.com");
helper.setSubject("Attachment");
helper.setText("See attached file.");
helper.addAttachment("file.txt", new File("/path/file.txt"));
mailSender.send(message);
Q2. What is MimeMessageHelper?
It simplifies setting properties, adding attachments, and handling multipart content.
The boolean
MimeMessageHelper is a helper class for populating a MimeMessage.It simplifies setting properties, adding attachments, and handling multipart content.
The boolean
true in constructor indicates multipart mode.Q3. How do you send HTML emails with inline images?
Use
Example:
MimeMessageHelper with HTML content and add inline resources.Example:
helper.setText("
...", true);
helper.addInline("imageId", new ClassPathResource("logo.png"));
Q4. How do you handle large attachments?
Be mindful of memory and file size limits.
You can use
Example using
You can use
InputStreamSource to stream attachments without loading into memory.Example using
FileSystemResource.Q5. How do you configure email with SSL/TLS?
In Spring Boot, set properties:
For
spring.mail.properties.mail.smtp.starttls.enable=true, spring.mail.properties.mail.smtp.ssl.trust.For
JavaMailSenderImpl, set appropriate properties on the JavaMailSender.