Grammarly's Tone Detector Called My Email 'Harsh.' It Was Right.
The tone slider is easy to ignore. The one time I listened, it kept me from sending a reply I'd have regretted.
I drafted a frustrated reply to a vendor and Grammarly flagged the tone as harsh with a confidence I didn't expect. I reread it and yeah, it read like a tell-off. The fix wasn't grammar, it was one softer opening line.
The tone feature is the one I used to dismiss as fluff. After it caught me twice, I started checking it on anything sent while annoyed. A two-second pause beats a relationship I have to repair.
It isn't always right. Sometimes 'direct' reads as 'harsh' and I keep it. But when I'm heated, the flag is a brake. I write the honest version, let it warn me, then decide if the heat should ship. Usually it shouldn't.
Updated October 28, 2026: the tone check is still the two-second brake worth keeping on.
Frequently asked questions:
Q: Is Grammarly's tone detector worth using?
A: On anything sent while annoyed, yes - it is a two-second brake. It flagged a frustrated vendor reply as harsh, and rereading confirmed it read like a tell-off. One softer opening line fixed it.
Q: Does the tone detector get it right every time?
A: No - sometimes direct reads as harsh and you keep it. Write the honest version, let it warn you, then decide whether the heat should ship. Usually it should not.