WriteToThem is a website by mySociety which allows UK citizens to contact their elected representatives.

Users do not need to know their representatives’ names: instead, using the mySociety software MapIt,[1] the site matches their postcode to its various constituency boundaries, before displaying elected representatives at all levels of UK government from local councillors to MEPs.

The site launched in 2000 as FaxYourMP,[4] allowing users to type a message into the website which would then be sent as a fax to their representative's office.

mySociety publish an annual table to show which MPs are the most and least responsive;[6][7] this is based on the results of a rolling survey which is sent to users two weeks after they use the site.

In 2006, it was reported by The Guardian that the Conservative MP Ian Liddell-Grainger appeared to admit in an email to the site to attempting to "up" his rating by sending himself queries.