No. It remains in the feed until you clear it, but it is no longer unread. That can make a message you meant to answer later easier to overlook. Mention Reminder reminds you regardless of whether you opened it.
Mention ReminderComparison
Slack Activity vs Mention Reminder
Slack Activity collects notifications, including your @mentions. You can read, filter and clear them, but reading a message does not mean you answered it. Mention Reminder keeps a separate list and reminds you until you reply or react.
⚖️ The short answer
Use Activity to review current notifications. Add Mention Reminder if you read mentions, put off replying and then forget them.
Free · no card · no extra app
What it is
What Slack Activity does
Activity is Slack's notification feed. The redesigned view, rolling out since January 2026, brings DMs, reminders and channels you follow together with mentions, threads and reactions, with filters for each and custom views saved as tabs on desktop. A numbered badge shows how many notifications are unread.
Marking a notification as read does not remove it from Activity. Clearing it hides it from the main view, with a record in Cleared notifications. New replies can appear again. Slack also has a Replied label on Activity items.
Activity is available on all Slack plans. Some filters, including VIP and specific channels, require a paid plan. It organises notifications but does not schedule recurring reminders for unanswered mentions.
Side by side
Compare the features
| Feature | Mention Reminder | Slack Activity |
|---|---|---|
| Reminders created automatically from @mentions | YesNo need to save messages. Applies to people an admin enables; obvious thanks and similar non-actionable mentions are skipped. | YesEvery mention appears in Activity without anybody doing anything. |
| Recognises a reply to the mention | YesYour thread reply or reaction clears it. On Team, AI can also match your reply posted separately in the channel. | PartlyCan show a Replied label, but does not maintain an automatic reminder list until you respond. |
| Clears the reminder after a reply or reaction | YesThe item leaves your list after your reply or reaction. Deleting the source message also clears the reminder. | NoClearing is by hand. Read items stay in the feed until you clear them. |
| Reminds the person who was mentioned | YesThe person mentioned in the message. | PartlyNotifies the person mentioned, but does not send recurring reminders for an unanswered mention. |
| Private, nothing extra posted in the channel | YesThe list and reminders are private. The bot adds a 🔔 reaction to the source message. | YesYour feed is visible only to you. |
| Personal reminder hours and timezone | YesOne daily reminder time on Starter; several chosen hours on Team. Weekdays only is optional. | NoNo reminder at all, only the notification when the mention arrives. |
| Supports Slack, Teams and Discord | YesTeam can link several servers, workspaces and teams. An admin links the same person’s accounts across platforms. | NoSlack only. |
| Team setup without each person configuring reminders | YesAn admin installs the bot and chooses people. Everyone uses their existing chat account. | YesBuilt into Slack, nothing to install. |
| Price | Starter is free for up to 5 people. Team starts at $2.50 per person per month, billed annually. | Included in every Slack plan. Some filters need a paid plan. |
When it is enough
When Activity is enough
- You work through Activity at your desk and answer each mention as you open it.
- You are disciplined about "mark unread" for anything you cannot answer right away.
- You get few mentions, so a badge and a filter are all you need.
When to add Mention Reminder
When to add Mention Reminder
- You often glance at mentions on your phone, and they count as read before you can answer.
- You want a list of what is unanswered, not of what is unread.
- You want a nudge at set hours, like 9:00 and 16:00, about anything still open.
- You also need the same for mentions in Teams or Discord.
🤝 Using both
Using both
Activity stays your live feed of everything new. Mention Reminder adds a short list next to it of the mentions you have not responded to, in your App Home tab, with a DM at the hours you picked. Reply in the thread or react and it leaves that list, whatever state the notification is in.
Not quite. It puts the message back in your unreads, but nothing notifies you about it later and it is cleared again the next time you open it. Mention Reminder sends a reminder at the hours you choose until the mention is dealt with.
It adds one reminder DM at each hour you pick, and only when something is still open. On the original message it adds a 🔔 reaction and nothing else, so the channel stays as it was.
More comparisons
- Slack Later (now To-dos)Saved messages and personal to-dos compared with mentions added to a list automatically.
- Slack /remindReminders you set in Slack compared with reminders created automatically from mentions.
- Slackbot AIAn AI assistant for questions and summaries compared with an automatic mention reminder list.
- Best Slack mention reminder appsSlack features and apps that help you return to mentions, compared.
Sources
Information last checked on October 14, 2026.
- Slack Help Center: Accessibility changelog (Replied label)
- Slack Help Center: Introducing the new Activity view
- Slack Help Center: Send and read messages
Other products change. If something here is out of date, tell us and we will correct it. Contact
Stop letting things vanish in the scroll
Add Mention Reminder to Slack, Teams or Discord - two minutes, once. After that it runs in the background and nobody on the team has to do anything else. Starter is free, no card.
Free · no card · no extra app