Related Clues:
- Measurements between grams and tonnes
- Keeps in the loop, email-style
- 1,000 in a tonne
- Loops in, briefly
- Includes in an email: Abbr
- Includes on a reply
- Some duplicate letters, in two ways
- Shelter hags giving up silver for tithes
- Cubic centimeters, for short
- Dupes, in brief
- Heavy weights in Britain
- They're found below the "To" field
- Keeps in the loop via email
- Video accessibility aid, for short
- Loops into an online convo