Mailvelope emails sent as multipart when formatting is turned on

[ChristophWurst]

Expected behavior

When sending an encrypted message with Mailvelope I want the encrypted text to be sent as plain text email.

Actual behavior

The text is sent as html+plain multipart if I have formatting on (which I can't use within Mailvelope anyway).

Messages sent with formatting off work fine.

Steps to reproduce

• Set up Mailvelope
• Start a new email
• Make sure formatting is already on either by account default or as a temporary override (tick the formatting option)
• Enable encryption
• Send the email

Mail app

Mail app version: v1.9.0

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The solution is most likely to automatically turn off formatting when encryption is on.

[pabzm]

As far as I can tell this doesn't happen anymore. Even when composing an email and at first using the formatting options and only after that switching to Mailvelope, the message gets sent as text/plain.