The phrase "a warm message" is correct and usable in written English.
It can be used when referring to a message that conveys kindness, affection, or support.
Example: "She sent me a warm message to lift my spirits during a tough time."
Alternatives: "a heartfelt message" or "a comforting message."
After Ryan's announcement, Trump sent the speaker a warm message via Twitter.
With it, was a warm message welcoming him in and saying that he would enjoy "the best job in the world".
Mr Bouteflika has received a warm message of congratulation on his country's independence anniversary from George Bush, in which Mr Bush describes Algeria as America's ally in the war against terrorism.
He granted his first interview as president to an Arab satellite channel, beamed a warm message to Iranians for their spring festival, and spoke at a conference on religious tolerance in Istanbul.
An elated President Clinton today offered a warm message of congratulations to the voters in both the Irish Republic and Northern Ireland after their approval of a wide-ranging peace accord.
The Tories bowed out of the seat to give her a free run against Labour, and Lloyd George, the prime minister, her old adversary in the halcyon days of the suffragettes, wrote her a warm message of government support.
When veteran explorer Sir Ranulph Fiennes is in the depths of a six-month trip – which will expose him to temperatures of -90C and long nights of darkness that will test human endurance to its limit – you can be sure he'll welcome any warm message to keep his spirits high.
He had sent her a brief, warm message, but what piqued her interest was his photograph.
It's a genuine warm message of nonmaterialism and the power of shared experience that Google is putting out there to the world -- all to Tony Bennett's rendition of "Cold, Cold Heart". But buried in the animation is another message -- one that appears to support gay marriage.
In a brief but warm message to journalists, Francis chose not to repeat a colourfully worded claim made last year in which he accused them of focusing on and exaggerating the negative sides of the Vatican.
Within a few seconds of making your first edit to an article with your new account, expect a warm welcome message from an editor that it is online at the moment.
