I am using EE 5.3.2 and have set up Mailgun SMTP in the settings. When I send an email through the Communicate utility, the email sends just fine, but if I try to add an attachment to the email, the attachment fails to send. I have tested using SMTP, sendmail, and PHP Mail in the Outgoing email settings, and in all cases, the email will send but the attachment does not get attached. I want to be able to send an email with attachment to email addresses or user groups, which the communicate page seems like it should work for, except the attachment issue. Has anyone run into this/solved it?