• Return 422 Unprocessable Content for malformed Mailgun, Postmark, and SendGrid raw email parameters.

  Andrii Furmanets

• Return 422 Unprocessable Content for malformed Mailgun and Postmark original recipient parameters.

  Andrii Furmanets

• Return 401 Unauthorized for malformed Mailgun signatures.

  Andrii Furmanets

• Return 422 Unprocessable Content for Mandrill inbound events that are missing a raw message.

  Andrii Furmanets

• Return 422 Unprocessable Content for Mandrill events payloads that don't parse to a JSON array of objects.

  Previously, valid JSON of the wrong shape (e.g. null, a scalar, an object, or an array containing non-objects) raised an unhandled NoMethodError and resulted in a 500. This now matches the existing behavior for invalid JSON.

  Nesan Vettivel

• Return 422 Unprocessable Content for malformed SendGrid envelopes.

  Andrii Furmanets

• Deprecate Mail::Address.wrap because it isn't used.

  Gannon McGibbon

Please check [8-1-stable]) for previous changes.