QuillReply vs Boomerang for Gmail
Boomerang practically invented this category, and it is a bigger product than QuillReply: send later, inbox pause, open tracking, meeting scheduling, and more. The honest question is not which tool has more features. It is what you trade for them, and whether you use them.
The short version
Boomerang works through full access to your mailbox. Its own privacy policy describes collecting the contents and headers of the communications you send and receive, and storing your messages on its servers so features like Send Later can work. That is a reasonable design for what it does; it is also a real trade.
QuillReply is built around the opposite trade: it requests no Gmail API scope at all, reads only the email you act on, in your own browser, and checks "did they reply" inside your own browser. If you mostly want reply reminders and good drafts, you can have them without handing anything the keys to your mail.
Side by side
| QuillReply | Boomerang | |
|---|---|---|
| Gmail permission required | None | Full mailbox access via the Gmail API |
| Where your mail content lives | On your screen; processed only when you click, then discarded | Message contents stored on their servers per their privacy policy |
| Remind me only if they have not replied | Yes, checked in your browser; ignores out-of-office autoreplies | Yes, checked server-side |
| AI and your writing | Drafts full replies in your voice, learned from emails you choose | Respondable scores and coaches the message you wrote |
| Email into a task | Apple Reminders, Microsoft To Do, Todoist, Basecamp, with suggested titles and dates | Not a task-manager tool; reminders return as email |
| Send later / recurring send | No, by design: we never hold outgoing mail | Yes, a core feature |
| Open and click tracking | No | Yes |
| Inbox pause, meeting scheduling | No | Yes |
| Price | 30 free actions, one time; then $5 per month, unlimited | Free tier (10 message credits per month); paid $4.98 to $49.98 per month, billed annually (no month-to-month rate published) |
Where Boomerang is stronger
If you schedule outgoing email, pause your inbox, track opens, or run recurring messages, Boomerang does all of that and QuillReply does none of it, on purpose. Every one of those features requires a service to hold or watch your mail, and staying out of your mailbox is the line QuillReply will not cross. Choose accordingly; both are legitimate designs.
Where QuillReply is different
Three things, all downstream of the same decision:
- Nothing to trust. "We never read your other mail" is not a promise here, it is an inability. There is no Gmail scope to misuse, in our hands or anyone who ever breached us.
- Drafting, not grading. Boomerang's Respondable tells you how your message scores. QuillReply writes the reply in your voice and waits for you to press Send.
- Tasks land where your tasks live. A reminder that returns as yet another email is more inbox. QuillReply files into Apple Reminders, Microsoft To Do, Todoist or Basecamp, with no developer accounts and no Apple ID requested.
Keep your mailbox yours
Thirty free actions to try it, one time and not per month. Pro is $5 a month, unlimited.
See how QuillReply worksComparison reflects publicly available information read 26 August 2026, including Boomerang's published privacy policy and its own subscriptions page, read 26 August 2026; features and prices change, so confirm details on their site. Boomerang is a trademark of Baydin, Inc. Gmail™ is a trademark of Google LLC. QuillReply is not affiliated with either. Corrections welcome: hello@quillreply.com.