Your colours. Your identity.
Set your brand colours, fonts, and logo once. Every module picks them up automatically — whether you're a company, community group, club, or project.
Set a primary colour and Commposer applies it across headers, buttons, and accents — keeping every email on-brand without manual effort.
Everything you need to say it well
A growing library of purpose-built blocks for useful, well-structured emails.
Section Heading
Break up long emails with clear section headings that guide readers through your content.
Rich Text
Paragraphs, lists, and inline formatting — structured body copy that renders cleanly everywhere.
Callout Box
Highlight important information with a visually distinct callout that draws the reader's eye.
Image + Text
Pair a photo or graphic with supporting copy in a clean side-by-side layout.
Data Table
Share structured data in a well-formatted table that survives the inbox unmangled.
Event Card
Promote upcoming events with date, time, and location in one scannable block.
Stats & Metrics
Showcase numbers and KPIs in a visually compelling stats block your readers will notice.
Signature
Add a professional sign-off with your name, title, and contact details.
Footer
Close with an unsubscribe link, legal copy, and your brand details — done right.
Works with the email client you already use
Commposer outputs clean HTML that renders well in all the popular email clients. No special setup required.
Gmail
Outlook
Apple Mail
Thunderbird
Hey
Download your finished email as an HTML file and paste it into any client. Or copy the HTML directly for tools that support it. Either way, it looks exactly as designed.
Save drafts to your computer
Your drafts are yours. Commposer saves to your local machine — nothing is stored on our servers without your say-so.
Your data stays with you
Drafts are saved as files on your computer. Share them however you like — send to a colleague, back them up to your own cloud storage, or keep them entirely offline. No lock-in.