Open the 'attach a file' window from the quick access toolbar. Choose the 'attach' function and 'add' it to the toolbar. Select more commands to customize your quick access toolbar.
TIP to Remove White area Around HTML email in Outlook. You have now created an HTML Email in Outlook for Office 365.
Now to attach the HTML file click on the new ‘Attach File’ button and navigate to your file – don’t hit the ‘Insert’ button, but rather drop it down and select the new option of ‘Insert as Text’. Overcome image issues by adding alt text and removing padding. Select the HTML file you need to import BUT do not click to INSERT yet 5. Open the 'attach a file' window from the quick access toolbar 4. Choose the 'attach' function and 'add' it to the toolbar 3. Select more commands to customize your quick access toolbar 2. Now return to the folder containing Outlook signatures, and then. Open the folder where the downloaded HTML signatures are saved, select all folders and files about the HTML. Open the folder containing Outlook signatures by pasting below folder path into the Address box in a folder.