MailTask
"I'll reply to that later" is where emails go to die. MailTask turns any message into a follow-up with a due date — one click, one list, overdue items impossible to miss.
€24 one-time · free tier, free forever · 30-day money-back
Your inbox is not a to-do list. You use it as one anyway.
Mark as unread. Flag it. Leave it at the top and hope. Every trick for "deal with this later" depends on you scrolling past it again at the right moment — and the moment a thread gets buried, the follow-up dies with it.
MailTask captures the email as a task before it sinks. One click grabs the subject, sender and date into a follow-up with a due date. The pinnable pane keeps the list beside your inbox, sorted by due date, with overdue items highlighted the moment you look. One honest caveat, stated in the UI too: Outlook add-ins can't run in the background, so reminders appear when you open the pane — not as push notifications. Pin it once and that distinction stops mattering.
Free vs Pro
Free runs a real follow-up list. Pro removes the ceiling and adds rhythm. One payment, no subscription.
| Feature | Free | Pro €24 |
|---|---|---|
| Capture email as task (subject + sender + date) | ✓ | ✓ |
| Due dates, sorted list, overdue highlighting | ✓ | ✓ |
| Complete / delete tasks | ✓ | ✓ |
| Up to 20 open tasks | ✓ | ✓ |
| Unlimited tasks | — | ✓ |
| Snooze presets (+1 day, +1 week…) | — | ✓ |
| Recurring follow-ups | — | ✓ |
| JSON export / import | — | ✓ |
How it works
Install the free add-in
Two minutes, no account, no card. Add it via Outlook's Get add-ins dialog — see the install guide.
Capture and pin
Click "Add this email" on anything that needs a follow-up; pin the pane so the list stays beside your inbox. Free forever — not a trial.
Unlock Pro when you need it
Buy once on Gumroad, paste your license key into the pane. Unlimited tasks, snooze and recurrence unlock instantly.
Installing MailTask
In Outlook: Get add-ins › My add-ins › Add a custom add-in, then add the MailTask manifest from URL or file. A MailTask button appears when you're reading a message; the pane is pinnable so it stays open as you move through your inbox.
Coming to AppSource: MailTask is being submitted to Microsoft's add-in marketplace, after which it installs in one click from inside Outlook. Sideloading works today.
FAQ
Will it pop up a reminder at the due time?
No, and any add-in that promises that is overpromising: Outlook web add-ins cannot run in the background. MailTask's honest design is a pinnable pane — overdue items are highlighted every time it's open, which in practice is every time you're in your inbox.
Why not just use Outlook flags or To Do?
Flags have no real due-date sorting and vanish into folders; To Do is a separate app to keep open and groom. MailTask is one click from the message, lives beside the inbox, and stores just enough — subject, sender, date, due — to chase the follow-up.
Where is the list stored?
In Outlook's roaming settings inside your own mailbox, so it follows your account across devices. Nothing is uploaded to us — no analytics, no tracking. See the privacy policy.
Refunds?
30-day money-back guarantee, no questions asked — reply to your Gumroad receipt or email [email protected].