Contact your representative and two senators using Resistbot, Democracy.io, or manually. And ask other people to do so as well. Sure, it’s minuscule, but that’s the main tool we’ve got afaik. Source: 7 months ago

In addition to contacting Warner's office, contact your specific representatives in the House and Senate. Check out https://democracy.io for a quick and easy way to contact all them at once. Source: about 1 year ago

Check https://democracy.io for an easy way to contact your representatives. I also just found this: Casework@gillibrand.senate.gov. Source: about 1 year ago

Democracy.io is a good place to start if you want to voice your concerns politely! Make sure to tell them you'll work against then in the primaries/caucuses if they support this bill. Source: over 1 year ago

Here is a site to easily email them: https://democracy.io. Source: over 1 year ago

I'll update this if I find more. For now, this seems to be a partial solution. It's a Gmail add on (except I don't use Gmail) that adds reminders. The options when setting reminders include cancelling it if someone replies, and to remind everyone in the thread. If you combine those two, it seems like — if you use Gmail's web client and have $23/month you're dying to get rid of — a decent way to add the feature. Source: over 1 year ago