Comparisons
CometReplyAI vs Shortwave
Shortwave is known as an AI-powered email client with a strong focus on the Gmail experience. CometReplyAI overlaps on the AI side but is built as an assistant on top of your existing inboxes — across email and messaging apps — that drafts replies in your voice and turns conversations into events and to-dos. Here's how they differ.
Bottom line: Shortwave is an AI email client centered on Gmail. CometReplyAI sits on top of the inboxes you already use — email and chat — drafting replies in your voice with calendar and to-do automation and a free plan. Choose CometReplyAI if you'd rather not switch email apps.
Sits on top of your inboxes
You keep using Gmail, Outlook, or whatever you have. CometReplyAI connects to them and drafts your replies, rather than replacing your client.
Beyond email
CometReplyAI drafts across messaging apps — Slack, WhatsApp, Telegram, Discord, LinkedIn — not just email.
Drafts in your personal voice
Set your writing preferences and every reply is drafted to sound like you, ready to review and send.
Calendar and to-do automation
Meeting requests become calendar events and action items become prioritized to-dos.
Frequently asked questions
Do I have to switch email apps to use CometReplyAI?
No. It connects to your existing email and messaging accounts and works alongside them.
Does CometReplyAI cover messaging apps too?
Yes — email plus Slack, WhatsApp, Telegram, Discord, LinkedIn, and more, in one unified inbox.
Is there a free plan?
Yes, CometReplyAI has a free plan with no credit card required. For Shortwave's current plans and pricing, see their website.
Is my data private?
Yes. CometReplyAI uses per-user data isolation and encrypted connections, doesn't sell your data, and never uses your message contents to train AI models.
Related pages
Start with replies already drafted
Free to start, no credit card required. Connect an account and see your first drafted reply in minutes.