> ## Documentation Index > Fetch the complete documentation index at: https://docs.sequenzy.com/llms.txt > Use this file to discover all available pages before exploring further. # Enroll Existing Subscribers > Add subscribers who already match your sequence trigger to an automation # Enroll Existing Subscribers When you create a sequence with a trigger (tag, list, or event), it only starts for **new** matches going forward. But what about subscribers who already match the criteria? ## The Problem Imagine this scenario: 1. You have 500 subscribers with the tag `past-due` 2. You create a new "Past Due Recovery" sequence triggered by that tag 3. The sequence only runs for **future** subscribers who get the tag Those 500 existing subscribers won't receive your recovery emails. ## The Solution Use the **Enroll Existing Subscribers** feature to retroactively add matching subscribers to your sequence. ### How to Use It 1. Open your sequence in the editor 2. Click the **people icon** in the header toolbar 3. Review the count of matching subscribers 4. Optionally exclude specific subscribers from enrollment 5. Click **Enroll** to add them to the sequence ### What You'll See The enrollment modal shows: * **Matching criteria** - The trigger condition being matched * **Subscriber count** - How many subscribers are eligible * **Subscriber list** - Paginated list of matching subscribers * **Exclusion controls** - Remove specific subscribers before enrolling ### Excluding Subscribers You can exclude specific subscribers from batch enrollment: 1. Click the **X** button next to any subscriber 2. They'll be marked as excluded (shown with strikethrough) 3. Click **Undo** to re-include them 4. The count updates to reflect exclusions This is useful when you want to enroll most subscribers but skip a few specific ones. ## Trigger-Specific Behavior ### Tag Added (`tag_added`) Matches all active subscribers who currently have the specified tag. ### Contact Added (`contact_added`) * **With specific list**: Matches subscribers in that list * **Any list**: Matches subscribers in any list ### Event Received (`event_received`) Matches subscribers who received the event in the **last 30 days**. Events older than 30 days are not included. This prevents accidentally enrolling subscribers based on very old activity. ## Enrollment Mode The enrollment respects your sequence's enrollment mode setting: | Mode | Behavior | | ----------- | ----------------------------------------------------- | | `one_time` | Excludes anyone who previously completed the sequence | | `unlimited` | Only excludes those currently active in the sequence | ## Sequence Status You can enroll subscribers even when the sequence is in **draft** or **paused** state: * Subscribers will be added to the sequence * They'll start processing once the sequence is **activated** * A warning is shown if the sequence isn't active ## Common Use Cases ### New Sequence for Existing Tags You've been tagging customers as `churned` for months. Now you want to create a win-back sequence: 1. Create the sequence with trigger: `tag_added: churned` 2. Use **Enroll Existing Subscribers** to add all currently churned customers 3. New churned customers will automatically enter going forward ### Onboarding Sequence Launch You're launching a new onboarding sequence for your product: 1. Create the sequence with trigger: `tag_added: signed-up` 2. Enroll existing signed-up users who haven't completed onboarding 3. Exclude users who are already paying customers ### Re-engagement Campaign Starting a re-engagement sequence for inactive users: 1. Create the sequence with trigger: `event_received: session_started` (inverted logic via tag) 2. Or use: `tag_added: inactive-30d` 3. Enroll all currently inactive subscribers ## Enroll at a Specific Step Sometimes subscribers finish a sequence, and you later add new steps. You can re-enroll those subscribers starting at a specific step — skipping the steps they've already completed. ### How to Use It 1. Open your sequence in the editor 2. **Hover** over the step where you want to enroll subscribers 3. Click the **Enroll** button that appears on the left side of the node 4. Choose from **Finished** subscribers (who already completed the sequence) or **Search** for any subscriber 5. Select subscribers and click **Enroll** ### How Filtering Works The "Finished" tab automatically filters subscribers based on their progress: * Only subscribers who **haven't already passed** the selected step are shown * Subscribers with an **active** enrollment in the sequence are excluded (shown as "Already active") * This prevents accidentally re-running steps a subscriber has already completed ### Example You have a 3-step welcome sequence. 15 subscribers completed it. You add steps 4 and 5: ``` Step 1: Welcome Email ✓ (15 completed) Step 2: Delay 3 days ✓ (15 completed) Step 3: Tips Email ✓ (15 completed) Step 4: Feature Email ← NEW (hover → click Enroll) Step 5: Delay 7 days ← NEW ``` When you click "Enroll" on Step 4, those 15 finished subscribers appear in the modal. They'll start at Step 4 and continue through Step 5, skipping the steps they already received. ### Notes * This bypasses the enrollment mode (`one_time` vs `unlimited`) — it's an explicit manual action * If the sequence is paused or draft, subscribers will be queued until the sequence is activated * You cannot enroll subscribers at the trigger node ## Best Practices 1. **Review before enrolling** - Check the subscriber list to ensure you're targeting the right people 2. **Start with draft mode** - Create and configure your sequence fully before enrolling 3. **Use exclusions wisely** - Exclude VIP customers or special cases that need manual handling 4. **Check enrollment mode** - Decide if subscribers should be able to re-enter the sequence 5. **Use step-specific enrollment for additions** - When adding new steps to an existing sequence, enroll finished subscribers at the new step rather than restarting from the beginning