User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.9.1.7pre) Gecko/20091212 Ubuntu/9.10 (karmic) Firefox/3.5.2 Build Identifier: 3.0 Not sure what this area is called, but the area where there are four spots to enter to whom an email is to should auto-expand when a message is being written to more than four people. It should work like this: 1. The user puts in four recipients 2. They press enter to input another. 3. The area gets larger to accommodate the additional person. 4. Steps 2 and 3 repeat as needed. 5. They press tab to compose the subject of the message.. 6. The area auto-compresses back to the normal four spots. This would make the entry of lots of people more efficient because: - you'd be able to see the names you already entered. - it wouldn't scroll faster than you can see it scroll when you press enter. Reproducible: Always

This was favourably considered in Bug 425451 Comment 22, but not implemented (yet). But it's probably just another stop-gap until we normalize our recipients area per Bug 440377: Move away from the one-line-per-recipient paradigm and do like most others do, multiple recipients on a single line.