Can't read from var mail neopixel

It looks like you're trying to read from a variable named mail that is associated with a Neopixel object, but you're having trouble doing so.

Here are a few things to check:

1. Make sure you've defined the mail variable correctly: Double-check that you've defined the mail variable and assigned it a value. If you haven't, you'll get an error when trying to read from it.
2. Check the data type of mail: Is mail a string, integer, or something else? Make sure you're trying to read from it in a way that's compatible with its data type.
3. Verify that mail is a valid Neopixel object: If mail is supposed to be a Neopixel object, make sure you've created it correctly and it's not None or some other invalid value.
4. Check for typos or syntax errors: Make sure you've typed the code correctly and there are no syntax errors. A single typo can cause issues like this.

If you're still stuck, please provide more context or code snippets, and I'll do my best to help you troubleshoot the issue!