I'm surprised to see this:
https://outgoing.prod.mozaws.net/
Why use this link in front of other links?
Two examples here:
https://outgoing.prod.mozaws.net/v1/f25582500f72007b6b5fe376d84fdf6185c21ee47d1ddc9a32275ab2f37f7404/https%3A//twitter.com/mailvelope
https://outgoing.prod.mozaws.net/v1/93377538754c52b39b6dbfee793e65c47f34f75a1f1f2b23d27da828005c99c7/https%3A//openpgpjs.org