Dear Senator,
Approved & sent
Advocacy infrastructure for coalitions
Where coordinated letter campaigns start
The coordination gap
A 1,000-person summit could generate 30,000 letters to Congress.*
Most currently generate none. Millions of Voices turns a summit into a coordinated letter campaign — members or AI write the right letter for each legislator, sent with one click.
The summit arithmetic
30,000letters
50 members sending 30 letters each returns $7,500* to your orgs
Coordinating letters on Millions of Voices is easy, powerful, and trusted.
Activate your campaign
The platform handles setup around the legislation, your cause objectives, and the offices you are targeting.
AI writes the right letter for each legislator
Members can use the generated draft, edit it, or replace it with their own.
Approve, send, and arrive on time
Letters are fulfilled through our Nashville and Phoenix partners and timed to land before the meeting.
Discover campaigns inspired by what you care about
Browse all campaigns
We've got your summit
Get what you need to make every meeting on the Hill count.
From pre-visit letters to day-before briefings and thank-you waves — whenever your coalition needs coordination, you can start here.
Featured topics
AI drafting
AI writes the right letter for every legislator
Generated from the legislation, your cause objectives, and each target office. Members use, edit, or replace the draft — then send in one click, even from a phone.
See the full walkthrough$5/letter
The revenue flywheel
Participating organizations don't only spend. Every letter sends $5 back to the organization whose member sent it. Nonprofits pay no subscription; for-profit organizations pay $25 a month.
Learn moreWhy physical letters work
Email is bulk-processed. Petitions are filed. A physical letter takes staff time, gets routed, and usually earns a reply.
Learn moreWho it's for
Organizers, member organizations, advocates, and donors — coordinated inside one campaign.
Learn moreHow Millions of Voices works
Watch — 1:15
Why we exist
Built because a thousand advocates arrived in Washington with nothing to deliver.
Millions of Voices was born at the Ukraine Summit in Washington, where advocates showed up without coordinated letter infrastructure. Payments run on Stripe, and every letter is fulfilled by our Nashville and Phoenix partners.
Running today
- Live at millionsofvoices.com
- Stripe payment processing
- Nashville & Phoenix fulfillment
- AI legislation tracking and letter generation
*Example arithmetic: 1,000 advocates × 30 letters = 30,000 letters. Example economics: 50 participating members × 30 letters × $5 returned per letter = $7,500 earned in a single summit event.