C# .NET Core, Java, Python, PHP, Node.js, Python, JavaScript, C++, Android, Swift, Go, Ruby, Dart, Perl APIs to create and convert PDF, Word, Excel, PowerPoint, Email, JPG, image, ZIP, and other formats on Windows, Linux, macOS & Android....excel 1 append tiff 1 attachment email 1 auto deskew 1 autocad...send anonymous email 1 send to email 1 sending email 1 sign on excel...