Email Thread Summariser

Never Re-Read a Long Email Thread Again

Threadly's AI reads every message in a thread and gives you the key takeaways, decisions, and action items — so you never have to scroll through 15+ emails to find what matters.

Free for 14 days. No credit card required.

Why Long Email Threads Are Killing Productivity

Every thread you re-read is time you could have spent on real work.

126

Emails per day

Radicati Group

28%

Of workweek on email

McKinsey

35%

Never opened

Key context lost (Mailbird)

23m

To refocus

After each interruption

The Hidden Cost of Re-Reading Email Threads

Minutes lost re-reading every thread

When you return to a thread with 15+ messages, you spend several minutes re-reading to find the context you need. Workers already spend 28% of their workweek on email (McKinsey) — and a large portion of that is re-reading threads you've already seen, just to find a buried decision or condition.

28% of the workweek is spent on email — much of it re-reading threads you've already seen (McKinsey)

Critical context buried mid-thread

The most important information in an email thread rarely appears in the first or last message. Decisions, caveats, and conditions get stated in message 7 of 15 — exactly where nobody looks. A Mailbird data analysis found that 35% of emails are never even opened, and even those that are opened tend to be skimmed rather than read carefully.

35% of emails are never opened — key details inside them are missed entirely (Mailbird)

More people, more messages, less clarity

As teams grow and projects span more stakeholders, email threads get longer. More participants, more "reply all" chains, and more back-and-forth mean that threads spiral into unreadable walls of text. With global email traffic projected to reach 424 billion messages per day by 2028 (Radicati Group), the volume is only increasing — and so is the time spent untangling long conversations.

347B

Emails/day (2024)

362B

Emails/day (2025)

424B

Projected (2028)

Source: Radicati Group Email Statistics Report

How Threadly Summarises Your Threads

Instead of re-reading every message, get an instant AI summary of what happened, what was decided, and what you need to do next.

Instant thread summaries

Threadly reads every message in a thread and produces a 2-3 sentence summary covering the key points, current status, and who said what — in seconds, not minutes.

Decision extraction

Every decision buried in the thread is pulled out and highlighted — approvals, commitments, and agreements — with source quotes so you can verify instantly.

Auto-updating summaries

When new messages arrive, the summary refreshes automatically. You always see the latest state of the conversation without manually re-reading anything.

Action item highlighting

Threadly identifies tasks, requests, and deadlines mentioned anywhere in the thread and surfaces them so nothing falls through the cracks.

See thread summaries in action — no signup needed

Try the interactive demo

Frequently Asked Questions

How does Threadly summarise email threads?

Threadly uses AI to analyse every message in a thread and produce a concise summary covering key takeaways, decisions made, action items, and who said what. Summaries update automatically as new messages arrive.

How long does it take to summarise a thread?

Threadly generates summaries in seconds, regardless of thread length. A 15-message thread that would take several minutes to re-read is condensed into a 2-3 sentence summary almost instantly.

Does the summary update when new emails arrive?

Yes. Threadly continuously monitors your threads and refreshes summaries whenever a new message is added. You always see the most up-to-date summary without having to re-read the entire chain.

Can I see the original emails alongside the summary?

Absolutely. Threadly shows the AI summary at the top of each thread view, with the full conversation below. You can always drill into the original messages if you need more detail or want to verify a specific point.

Does Threadly work with Gmail and Outlook?

Yes, Threadly connects securely to both Gmail and Outlook accounts. Your email data is encrypted with AES-128 and never shared with third parties. Summaries are generated on our servers and delivered to your Threadly dashboard.

Your Email Lifecycle at a Glance

Needs Action

Threads requiring your response

Deciding

Decisions pending approval

Waiting

Awaiting replies from others

Done

Completed or inactive threads

Stop re-reading — start summarising

AI-powered thread summaries for every email. Free for 14 days, no credit card required.