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Troubleshoot

Can I add attachments to my newsletter?

You can add attachments to your campaigns by using the attachment meta box on the campaign edit screen.

You can add any attachment you can upload to your site with a maximum total size of 1MB.

You can alter the limit by using this filter hook:

add_filter( 'mailster_attachments_max_filesize', function() {
     // Return 5MB
     return 1024 * 1024 * 5;
} );

Keep in mind that attachments can significantly increase your email size and some hosts may reject your mailings. You should also consider sending a link where subscribers can download your files.