By combining this and an adequate filter, I found any easy way to send myself not without having them lying around.
Here's the way:
- Create a label "Notes". Give it beige color (like Post-it) with the color 243,231,179
- Create a filter:
- "to:(firstname.lastname@example.org)" xxxxx is your gmail address
- apply label "Notes"
Great time (and memory) saver!