Writing commands
Writing commands rewrite the text you have already drafted rather than generating something from scratch. Select a sentence or a whole email, press the shortcut, and the selection is replaced with the revised version - in Mail, Slack, Notion, a browser text box, or anywhere else macOS lets you select text.
Commands
Slack Answer
Inline⌥SSlack Replies
Use Slack Answer when you are looking at a Slack conversation and want a quick, natural-sounding reply without overthinking the wording. It reads your screen context to understand the thread, then writes a short reply that matches the tone and energy of the conversation. Perfect for when you know what you want to say but want to get the phrasing right in two seconds.
Professional Tone
Inline⌥PRewrite for professional context - emails, Slack, docs.
Use Professional Tone when drafting emails, Slack messages, or documents that need to sound polished without being stiff. It cleans up casual language, removes filler words, and adjusts phrasing to suit a business context while keeping your original meaning intact.
Write LinkedIn posts that actually get seen - built on 2026 algorithm guidelines for reach, hooks, and engagement.
Use LinkedIn when you have an idea, story, or opinion you want to share as a LinkedIn post optimized for reach. It structures your input with an attention-grabbing hook, proper spacing, and a conversation-starting question at the end. The output follows 2026 algorithm best practices including ideal character count, no external links, and natural hashtags.
Generate Alternative
Popup⌥GProvide one distinct rewritten variation of the same text.
Use Generate Alternative when your first draft feels flat or you want a fresh angle on the same idea. It rewrites your text with different word choices, sentence structures, and framing while keeping the core message. Useful for landing pages, pitch decks, or any writing where you want options to compare.
Casual Tone
Inline⌥CRewrite in natural everyday English that doesn't feel AI-edited.
Use Casual Tone when your writing sounds too stiff, robotic, or overly formal and you want it to read like a real person wrote it. It rewrites text in natural everyday English with contractions and conversational flow while keeping your meaning intact. Great for softening corporate-speak in Slack messages, internal docs, or blog drafts.
The tone commands are the ones people use daily. Professional Tone takes a blunt message and softens it without turning it into corporate filler. Casual Tone goes the other way. Generate Alternative gives you a second phrasing when the first one is not quite right, which is often faster than editing the sentence yourself.
For non-native English speakers this is the core of what Echoo does: write the message the way it comes naturally, then run one command to make it read like you meant it. Nothing is stored - the text goes to your chosen provider and the result comes back.