Saving other content (Premium)
Prerequisites
Save something
Open the add-on while viewing or composing a message
Find and click the down-arrow just under "Premium Features"
This expands out the section, revealing a few new fields
Title - enter a title for the data you're saving
Optional - is the main label for this piece of data so recommended
Description - add some detail or keywords
Optional - is included with the title in searches by default
Position
You can choose where in your list this item will be saved. Lower numbers are higher up the list. The titles of the existing items are also shown, and choosing a spot that's already taken will move the rest down to make space
Available when composing - toggles the visibility of this item when you're composing a message
If turned off, the item won't show up when you're composing a message. Handy if you want to save something, but don't want to use it when composing
Save and edit - Opens the edit window where you can write or paste your own content
Save this email - Saves the current message thread
Tips for high quality content
HTML is by far the best way to present visually appealing content.
We recommend using Copy and Paste, then editing the content in the pop-up window if needed.
Using images
The add-on doesn't store whole images as they're a bit too heavy and specialised
Instead, refer to existing images by using the Image button in the pop-up editor
If you don't have a website to host your images, don't fret. Your Google account has you covered!
Open your Google Drive (drive.google.com)
Create a new file - choose Drawings
Use the drawing tools or menus to upload your image
If uploading an existing image, use PNG. JPEGs are just black in Drawings when published unfortunately. You can find plenty of converters with a quick search
Click File, then Publish to the web
Continue until published, and you'll be given a link
You can use this link in the HTML image tag: <img src=" here " />