SAN FRANCISCO, Calif. – Nearly 1,000 Twitter employees have donated more than $1m (£790,000) to the American Civil Liberties Union that has pledged to fight US President Donald Trump’s temporary ban on refugees and immigrants from seven Muslim-majority countries.

Staff at the social media company donated more than $500,000, which was matched by chief executive Jack Dorsey and executive chairman Omid Kordestani, according to TechCrunch.

The civil rights group – ACLU – has reportedly raised more than $24m in online donations in the past few days.

It is also reported by Bloomberg that some of the largest US technology companies are preparing an open letter to President Trump, expressing concern about his order on immigration and offering help to “fix it”.

Meanwhile, messaging platform Viber has offered free international calls to the affected countries – Iraq, Syria, Iran, Libya, Somalia, Sudan and Yemen.