Boomerang

Gmail add-on for scheduled sending, reminders and follow-up tracking

AI Office ProductivityFree planOverseas★★★☆☆ 3.0

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What is Boomerang?

Boomerang is a Gmail add-on that adds scheduling, reminders and follow-up tracking to the inbox you already use. You can write a message now and have it sent later, get a nudge if nobody replies, pause the inbox until a chosen time, and confirm whether a message was read. It is a conventional productivity utility rather than an AI product, and its writing-assistance features are a minor add-on compared with the scheduling core. The free tier limits how many scheduled messages you can keep queued at once.

Last updated: 2026-09-20. This site only provides an index; for exact features, pricing, and licensing, see the official website.

Key features

Schedule emails to send at a chosen date and time
Automatic reminders when a sent message gets no reply
Read receipts that confirm whether a message was opened
Inbox pause that holds new mail until a set time
Send later for composing drafts offline and dispatching on schedule
Writing assistance and response-time feedback as add-on features

Pros & cons

Strengths

Solves a real inbox problem with very little setup
Works directly inside Gmail rather than in a separate app
Free tier is enough to judge whether the workflow suits you

Watch out for

AI features are minor compared with the scheduling core
Tied to Gmail, so other mail providers are not supported
Free tier caps the number of active scheduled messages

Best for & use cases

scheduled sending, follow-up reminders, inbox management and sales outreach

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FAQ

Is Boomerang an AI tool?

Only marginally. Its core is scheduling, reminders and read tracking, and the AI-assisted writing features are secondary. Choose it for inbox control rather than for generative help.

Does it work outside Gmail?

No. It is built as a Gmail add-on for the browser, with mobile support through the Gmail apps, so accounts on other mail providers cannot use it.

What is the free tier like?

It allows a small number of scheduled messages at a time and basic reminders. Regular scheduling or read receipts push you onto a paid plan fairly quickly.