diff --git a/.golangci.yml b/.golangci.yml
index 2aa0fa1..fd139bc 100644
--- a/.golangci.yml
+++ b/.golangci.yml
@@ -6,6 +6,7 @@ linters:
     - depguard
     - wsl
     - testpackage
+    - gomodguard # deprecated
   settings:
     gocritic:
       enable-all: true
diff --git a/database.go b/database.go
index 9460988..869ceb7 100644
--- a/database.go
+++ b/database.go
@@ -209,12 +209,13 @@ func snapshotSubscriber(sub *Subscriber) *Subscriber {
 	}
 
 	out := &Subscriber{
-		ID:      sub.ID,
-		API:     sub.API,
-		Contact: sub.Contact,
-		Events:  snapshotEvents(sub.Events),
-		Admin:   sub.Admin,
-		Ignored: sub.Ignored,
+		ID:        sub.ID,
+		API:       sub.API,
+		Contact:   sub.Contact,
+		Events:    snapshotEvents(sub.Events),
+		Admin:     sub.Admin,
+		Ignored:   sub.Ignored,
+		FirstSeen: sub.FirstSeen,
 	}
 
 	if sub.Meta != nil {
diff --git a/subscriber.go b/subscriber.go
index f8bb4ef..954aca8 100644
--- a/subscriber.go
+++ b/subscriber.go
@@ -1,5 +1,7 @@
 package subscribe
 
+import "time"
+
 /**************************
  *   Subscriber Methods   *
  **************************/
@@ -19,10 +21,11 @@ func (s *Subscribe) CreateSub(contact, api string, admin, ignore bool) *Subscrib
 	}
 
 	s.Subscribers = append(s.Subscribers, &Subscriber{
-		Contact: contact,
-		API:     api,
-		Admin:   admin,
-		Ignored: ignore,
+		Contact:   contact,
+		API:       api,
+		Admin:     admin,
+		Ignored:   ignore,
+		FirstSeen: time.Now().UTC(),
 		Events: &Events{
 			Map: make(map[string]*Rules),
 		},
@@ -50,11 +53,12 @@ func (s *Subscribe) CreateSubWithID(subID int64, contact, api string, admin, ign
 	}
 
 	sub := &Subscriber{
-		ID:      subID,
-		Contact: contact,
-		API:     api,
-		Admin:   admin,
-		Ignored: ignore,
+		ID:        subID,
+		Contact:   contact,
+		API:       api,
+		Admin:     admin,
+		Ignored:   ignore,
+		FirstSeen: time.Now().UTC(),
 		Events: &Events{
 			Map: make(map[string]*Rules),
 		},
@@ -64,6 +68,26 @@ func (s *Subscribe) CreateSubWithID(subID int64, contact, api string, admin, ign
 	return sub
 }
 
+// DeleteSubscriber removes a subscriber by ID + API. Returns ErrSubscriberNotFound if missing.
+func (s *Subscribe) DeleteSubscriber(subID int64, api string) error {
+	if subID == 0 {
+		return ErrSubscriberNotFound
+	}
+
+	s.mu.Lock()
+	defer s.mu.Unlock()
+
+	for i, sub := range s.Subscribers {
+		if sub.ID == subID && sub.API == api {
+			s.Subscribers = append(s.Subscribers[:i], s.Subscribers[i+1:]...)
+
+			return nil
+		}
+	}
+
+	return ErrSubscriberNotFound
+}
+
 /* Convenience methods to access specific types of subscribers. */
 
 // GetSubscriber gets a subscriber based on their contact info.
diff --git a/subscriber_test.go b/subscriber_test.go
index 537afd6..724263e 100644
--- a/subscriber_test.go
+++ b/subscriber_test.go
@@ -101,17 +101,35 @@ func TestCreateSubWithID(t *testing.T) {
 	assert.EqualValues(t, 10, first.ID)
 	assert.True(t, first.Admin)
 	assert.False(t, first.Ignored)
+	assert.False(t, first.FirstSeen.IsZero())
 	assert.Len(t, sub.Subscribers, 1)
 
+	seen := first.FirstSeen
 	second := sub.CreateSubWithID(10, "contact-new", "api", false, true)
 	require.NotNil(t, second)
 	assert.Same(t, first, second)
 	assert.False(t, second.Admin)
 	assert.True(t, second.Ignored)
 	assert.Equal(t, "contact", second.Contact)
+	assert.Equal(t, seen, second.FirstSeen)
 	assert.Len(t, sub.Subscribers, 1)
 }
 
+func TestDeleteSubscriber(t *testing.T) {
+	t.Parallel()
+
+	sub := &Subscribe{Events: new(Events)}
+	sub.CreateSubWithID(10, "a", "api", false, false)
+	sub.CreateSubWithID(20, "b", "api", false, false)
+
+	require.NoError(t, sub.DeleteSubscriber(10, "api"))
+	assert.Len(t, sub.Subscribers, 1)
+	assert.EqualValues(t, 20, sub.Subscribers[0].ID)
+
+	assert.Equal(t, ErrSubscriberNotFound, sub.DeleteSubscriber(10, "api"))
+	assert.Equal(t, ErrSubscriberNotFound, sub.DeleteSubscriber(0, "api"))
+}
+
 func TestGetSubscriberByID(t *testing.T) {
 	t.Parallel()
 
diff --git a/subscription_test.go b/subscription_test.go
index 40f9240..6f961c3 100644
--- a/subscription_test.go
+++ b/subscription_test.go
@@ -14,22 +14,24 @@ func TestCheckAPI(t *testing.T) {
 
 	assertions := assert.New(t)
 
+	const event = "event"
+
 	subscriber := &Subscribe{Events: new(Events)}
 	assertions.True(subscriber.checkAPI("test_string"), "an empty slice must always return true")
 
-	subscriber.EnableAPIs = []string{"event", "test_string"}
+	subscriber.EnableAPIs = []string{event, "test_string"}
 	assertions.True(subscriber.checkAPI("test_string://event"), "test_string is an allowed api prefix")
 
-	subscriber.EnableAPIs = []string{"event", "any"}
+	subscriber.EnableAPIs = []string{event, "any"}
 	assertions.True(subscriber.checkAPI("test_string"), "any as an allowed value must return true")
 
-	subscriber.EnableAPIs = []string{"event", "all"}
+	subscriber.EnableAPIs = []string{event, "all"}
 	assertions.True(subscriber.checkAPI("test_string"), "all as an allowed value must return true")
 
-	subscriber.EnableAPIs = []string{"event", "test_string"}
+	subscriber.EnableAPIs = []string{event, "test_string"}
 	assertions.True(subscriber.checkAPI("test_string"), "test_string is an allowed api")
 
-	subscriber.EnableAPIs = []string{"event", "test_string2"}
+	subscriber.EnableAPIs = []string{event, "test_string2"}
 	assertions.False(subscriber.checkAPI("test_string"), "test_string is not an allowed api")
 }
 
diff --git a/types.go b/types.go
index ac105c5..0602306 100644
--- a/types.go
+++ b/types.go
@@ -42,6 +42,8 @@ type Subscriber struct {
 	Admin bool `json:"isAdmin"`
 	// Ignored will exclude a user from GetSubscribers().
 	Ignored bool `json:"ignored"`
+	// FirstSeen is when this subscriber record was first created. Zero if unknown (legacy rows).
+	FirstSeen time.Time `json:"firstSeen,omitzero"`
 }
 
 // Events represents the map of tracked global Events.