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Yes. Members of the US Congress and Canadian MPs publish fax numbers on their official office pages, and a fax to one of those numbers lands at the office just like any constituent mail. Keep your fax to one page, include your full name and address so staff know you are a constituent, and expect no reply.
| Who | Where to find the fax number | Which office to fax |
|---|---|---|
| US House member | The member's house.gov contact page | Your own representative's district office or DC office |
| US Senator | The senator's senate.gov contact page | Your own senator; staff count only their constituents |
| Canadian MP | The member's page on the Parliament of Canada site | Your own riding's MP, Ottawa or constituency office |
Faxing sits in a useful middle ground. Email inboxes at congressional and parliamentary offices are flooded, and web contact forms often cap your message length and swallow attachments. Phone calls get logged but rarely reach the member's desk. A fax arrives as a physical page that a staffer handles, reads, and files, much like a letter, but without the days of postal travel. Advocacy groups have run fax-your-rep campaigns for years precisely because a stack of constituent faxes on a desk is harder to ignore than an overflowing inbox. It is not magic; it is just a message in a format offices still process by hand.
One page, three short paragraphs. The first identifies you as a constituent: full name, home address, and the city. Offices tally opinions by constituent status, and a fax without an address is filed as noise. The second states your position on the specific bill or issue, with the bill number if you have it: "I oppose H.R. 1234" beats a paragraph of general sentiment. The third is one sentence of your personal reason, a detail from your life or work that the form letters do not carry. Sign it. Fax quality is rough, so use a large plain font, wide blank borders, and no light gray text; what looks crisp on your screen can arrive as a smudge.
It helps but is not required. A quick call to confirm the fax number is current saves you from sending your carefully written page into a disconnected line, since office fax numbers change when members reorganize staff or move offices. Ask the staffer who answers for the best number for constituent correspondence, and confirm whether the DC office or the district office is handling the issue you care about. Some offices prefer faxes to go to the district office, where constituent casework lives.
You can, with tradeoffs. Free fax services typically limit you to a few pages per day and attach a branded cover page advertising the service, which looks unprofessional on constituent correspondence. Paid online fax services send clean pages with your own cover sheet. Whichever you use, double-check the number before sending: a fax to the wrong office wastes the message and, in the worst case, sends your personal details to a stranger. Send a test to your own number first if the service allows it.
LetterAgent's fax service is in testing, so treat it as coming soon rather than available today. When it is live, the flow is the same as the letter flow: ask your AI assistant, get a per-fax quote with the page count verified, approve the exact total, and pay once through Stripe. Only US and Canadian fax numbers are supported, and there are no inbound faxes. For now, an online fax service or a fax machine at a library or shipping store will get your message to your representative's office.
Ready to fax it? Fax with LetterAgent: describe it to your AI assistant, approve the exact quoted price, and it is sent.
LetterAgent is a working name. Prices include print, postage, and our service fee. US prices in USD, Canadian prices in CAD (Canadian prices exclude applicable sales tax, added at checkout). Currently in private testing.
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