Trello reminders: how to remind your team at a specific time

Trello's reminders are built around due dates. That's fine when the reminder is for you, or for whoever owns a card. It gets clumsy when you want to tell Jana, at 9:00 on Thursday, that the final files are ready for her review.

What Trello gives you out of the box

The basic tool is the due date. Open a card, click Dates, set the date and time, and choose when the reminder goes out, anything from the moment it's due to a couple of days before. Trello sends it to everyone who is a member of the card or watches it, by email or on their phone depending on their settings. A due date can also repeat: the Recurring option in the same dialog is handy for a weekly deadline.

On paid Trello plans you can go a step further and give individual checklist items their own due date and assignee. That's useful for splitting one card into small tasks for different people, each with its own deadline.

Both are good at one thing: telling someone that a deadline is coming. Neither lets you write a message.

When a reminder isn't enough

A lot of what we call reminders in a team are really messages that need to arrive at the right time. A few typical ones:

• "@Tom the client presentation starts at 2 PM, slides are attached above."
• "@Jana the copy is approved, you can start on the pricing page."
• A note to yourself for Monday morning: check the client's feedback before the weekly call.

A due date can't carry any of that. You'd have to set the reminder, wait for it to fire and then type the comment yourself, which defeats the point.

Use a scheduled comment with an @mention

A comment that mentions someone already works like a reminder. Trello notifies the person you tagged, the notification shows your text, and the context stays on the card where it belongs. The only missing piece is timing, and that's what a scheduled comment adds.

With PrimeScheduler (my own Power-Up, so take my enthusiasm with a grain of salt) it takes a few seconds:

1. Open the card and click Schedule comment.
2. Write the message and type @ to mention the person.
3. Pick the day and time, then click Schedule.

At that minute the comment is posted under your name and the person gets a normal Trello notification. If plans change, you can cancel it from the card before it goes out. If you'd rather not install anything, a scheduled email to the card's address works too. I go through that and two other ways in How to schedule a comment in Trello.

Reminders that actually get read

Put the action in the first line. People read notifications on their phone, where the preview cuts off after a sentence or so. "Please review the homepage copy by 3 PM" works better than a friendly paragraph that gets to the point at the end.

Mention one person. If a comment tags the whole team, everyone assumes someone else will handle it.

Don't overdo it. A scheduled reminder for every small step trains people to skim them. Keep them for things that are easy to forget or that depend on timing, like handoffs and anything due on a specific day.

And keep using due dates for deadlines. They show up on the card, in calendar views and in filters, and a comment doesn't. The two work well together: the due date says when something is due, and the comment says what you need from whom.