Why is my email all... purple?

If you're previewing multiple drafts of an email in Gmail, you might notice that the text is all purple!

This isn't a Buttondown problem. This happens when Gmail decides that multiple emails sent in the same day with the same subject are responses to one another. When this happens, it displays the thread of emails in a "conversation view."

To learn more about Gmail's conversation view, read Google's documentation:

The purple coloration is a display only feature that only exists in the display where it is being seen. It is not sent in any messages and you can use Gmail's show original feature to verify that - you will need to know a little about HTML coding.

The color is applied to text that is repeated from a previous message in the current conversation and the reason it is visible to recipients is because they also are using Gmail and they also have copies of previous messages in the current conversation. What gets coloured in their conversation might be quite different from what gets coloured in yours.