How can I sign a PDF file in an email?

MSB Docs offers a quick and easy way to electronically approve documents, even email attachments right in your Gmail inbox. To use this feature, create an account with MSB Docs, then search for and install the MSB Docs for Gmail add-on in Google Workplace Marketplace. Opening the email attachment you need to sign? Click on the S icon within the right-side panel to launch the tool; you can upload the document into MSB Docs and place My Signature field to eSign your form with just a few clicks.