Some mail service requires encrypted password, for example, MD5 hash. Xnotifier can include those cryptographic hash api.
By the way, I'd like to ask you about parsing JSON data. I find some mail service return JSON data. Which is more efficient way, using JSON.parse or regExp? I think it's easier and more accurate to parse data as JSON.
You can find MD5 javascript
You can find MD5 javascript library with google.
Usually, I need small part of data to get mail count.In that case, regExp is more efficient than JSON.
And what's more, some webmail does not use JSON data.