Messages Tool Guide
Updated July 2026
Messages is Apple's app for iMessage and SMS conversations. PromptDC for Desktop rewrites your text in place inside Messages on macOS and Windows.
Messages tool guide
Rewrite text in place inside Messages.
Works everywhere
PromptDC for Desktop works in any app on Mac or Windows. The Chrome extension covers any website.
In-Place Rewrites
Transform rough notes into clear, structured instructions instantly.
Why Use PromptDC with Messages?
What PromptDC for Desktop does inside Messages.
Works inside Messages
Select your text in Messages, use the desktop shortcut, and review it before you Replace.
Review every rewrite
PromptDC shows the rewrite in an editable popover and never sends, posts, or presses Enter.
Choose a default
Choose any profile that fits, or add your own profiles and Custom Actions.
Switch profiles quickly
Assign profile shortcuts to switch quickly among Grammar, Reply, Professional, Concise.
One-off instructions
Add a Custom Action to give one selection its own instruction, up to 19,000 characters.
Choose output language
Choose an output language or use Auto, then shape the rewrite with profiles and context.
Before and after text for Messages
Rough request on the left, the PromptDC rewrite on the right.
Before
dad soccer ends at 6 now can u get leo field 3 ill get mia from dance
After
Dad, soccer ends at 6 now. Can you pick up Leo from Field 3? I'll get Mia from dance.
Why this is better: The text clarifies the changed time and splits pickup duties for fast family coordination.
Before
we can all 4 come to emmas party saturday thanks for inviting us
After
We can all come to Emma's party on Saturday. There will be four of us. Thanks so much for inviting us!
Why this is better: The text gives a warm acceptance and confirms the date and headcount for the party host.
Before
at the station train is like 10 mins late just letting u know
After
I'm at the station. The train is about 10 minutes late. I just wanted to keep you posted.
Why this is better: The text removes filler while keeping the location and delay easy to scan in Messages.
Frequently Asked Questions
Learn shortcuts & usage?
Read the shortcuts docs
Need assistance with Messages?
Contact help & support
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