Delegate encoding to Zend/Laminas

[erfanimani]

See https://github.com/laminas/laminas-mime/blob/baa7b1c32b6b4188826af9ba391de7ded9de799b/src/Mime.php#L303

I'm using Laminas because, I suppose, at some point the Zend classes will stop working (https://community.magento.com/t5/Magento-DevBlog/Migration-of-Zend-Framework-to-the-Laminas-Project/ba-p/443251)

[scottsb]

I take it the purpose here is to gain the benefit of Laminas's more nuanced base64 encoding that is sensitive to line lengths? Is that right?

[erfanimani]

Hmm, I can't remember exactly what the technical issue was, but the commit on my client project is "Fixed attachments breaking emails".

I remember that adding attachments to emails prevented this from working. Magento doesn't use attachments out of the box I believe, but there was a custom form module that added uploaded files as email attachments.