Label a sent email. Claude watches for replies, drafts follow-ups when they're overdue, and puts a calendar reminder on your morning. Two follow-ups. Then it moves on. Zero manual tracking.
Follow-Up Tracker is a Claude plugin that connects to your Gmail and Google Calendar. You flag sent emails you care about. A daily scan checks if anyone replied. If they didn't, Claude drafts a follow-up and puts a reminder on your calendar.
You control how long to wait before following up. Just apply the right Gmail label after sending:
Claude doesn't just fire off a generic "bumping this" message. Before drafting, it reads the original thread and searches your Gmail for prior correspondence with that person. The result is a follow-up that sounds like you wrote it, references the actual conversation, and includes a natural call to action.
Claude saves follow-ups as Gmail drafts, never sends anything automatically. You review, edit if needed, and hit send yourself.
Download the plugin file and install it in Claude:
follow-up-tracker.plugin directly.Message box shows a Chat / Cowork switch? Pick Cowork for this. Why.
/setup, /scan-now, and /check-follow-ups become available.The plugin needs two MCP connectors. If you don't have them yet, Claude will walk you through connecting them during setup.
You need three labels in Gmail. Go to Settings → Labels → Create new label:
The label names must match exactly, including the space before "3d" and "14d". Gmail labels are case-sensitive.
Open Claude and type:
Ask Claude to create a scheduled task so the scan runs automatically every morning:
Plugin installed. Labels created. Setup done. Start labeling sent emails and the tracker takes over.
After sending an important email, apply one of the three labels. That's your only job. No spreadsheets, no reminders to set, no "I'll check back on Thursday."
Claude scans every labeled email, reads each thread, and checks whether the person replied. For any that are overdue:
You see the calendar events. Open each draft, tweak if needed, and send. The whole review takes 2-3 minutes even with multiple follow-ups queued.
If you miss the automated scan or want to run one manually, just open Claude and type /scan-now.
The Claude desktop app lets Claude run tools, connect to services, and manage tasks on your behalf. It's where this plugin lives. You open the Claude app, start a conversation, and interact with your plugins through slash commands or plain conversation.
Download Claude Desktop from claude.com/download. Once installed, you can start connecting plugins and connectors.
The plugin gives you three commands. Type them directly in Claude:
Verifies Gmail + Calendar connections, checks labels, sets your email and timezone preferences.
Runs the full follow-up scan immediately. Same thing the 6:30 AM task does, on demand.
Shows all tracked emails and their current status, without drafting anything new.
You don't need slash commands. The plugin triggers automatically when you ask about follow-ups in plain English:
The real power is automation. Once you set up the daily scan (see Setup, Step 5), the plugin runs every morning without you opening Claude. Drafts appear in your Gmail, reminders appear on your calendar. You just review and send.
Claude is the brain. Gmail and Calendar MCPs are the hands. The plugin is the playbook. You just label emails and show up in the morning.
The plugin doesn't just send the same follow-up forever. It has a built-in escalation curve:
Three or more follow-ups start to feel desperate. Two is the sweet spot, persistent enough to stay top of mind, respectful enough to maintain the relationship. If they haven't replied after two, the ball is in their court.
The scan detects replies automatically. As soon as someone responds to a tracked thread, it gets marked as replied and drops off the follow-up queue. No cleanup needed on your end.
No. Follow-ups are saved as Gmail drafts in the same thread. You always review before sending. Claude never hits send for you.
Remove the label from the email in Gmail. On the next scan, Claude will stop tracking it.
Yes, just swap the label. Remove "Follow Up" and add "Follow Up 3d" if you want to shorten the window. The next scan will pick up the change.
The scheduled task will run the next time your Mac wakes up. Or just type /scan-now when you sit down.
Yes, as long as your Gmail MCP is connected to that account. The plugin works with any Gmail-compatible account.
Tracking state lives in a tracking.json file in your Claude workspace folder. It's a simple JSON array. All email reading happens through the Gmail MCP, no emails are stored locally.
The plugin matches the tone of your original email automatically. If you sent something formal, the follow-up will be formal. Casual emails get casual follow-ups. You can always edit the draft before sending.
Three labels. One setup command. Never manually track a follow-up again.