diff --git a/pkg/detectors/postmark/postmark.go b/pkg/detectors/postmark/postmark.go
index 333855d12..4848fb123 100644
--- a/pkg/detectors/postmark/postmark.go
+++ b/pkg/detectors/postmark/postmark.go
@@ -2,10 +2,14 @@ package postmark
 
 import (
 	"context"
-	regexp "github.com/wasilibs/go-re2"
+	"errors"
+	"fmt"
+	"io"
 	"net/http"
 	"strings"
 
+	regexp "github.com/wasilibs/go-re2"
+
 	"github.com/trufflesecurity/trufflehog/v3/pkg/common"
 	"github.com/trufflesecurity/trufflehog/v3/pkg/detectors"
 	"github.com/trufflesecurity/trufflehog/v3/pkg/pb/detectorspb"
@@ -43,20 +47,10 @@ func (s Scanner) FromData(ctx context.Context, verify bool, data []byte) (result
 		}
 
 		if verify {
-			req, err := http.NewRequestWithContext(ctx, "GET", "https://api.postmarkapp.com/deliverystats", nil)
-			if err != nil {
-				continue
-			}
-			req.Header.Add("Accept", "application/json")
-			req.Header.Add("Content-Type", "application/json")
-			req.Header.Add("X-Postmark-Server-Token", resMatch)
-			res, err := client.Do(req)
-			if err == nil {
-				defer res.Body.Close()
-				if res.StatusCode >= 200 && res.StatusCode < 300 {
-					s1.Verified = true
-				}
-			}
+			valid, extraData, err := verifyKey(ctx, client, resMatch)
+			s1.Verified = valid
+			s1.ExtraData = extraData
+			s1.SetVerificationError(err)
 		}
 
 		results = append(results, s1)
@@ -65,6 +59,87 @@ func (s Scanner) FromData(ctx context.Context, verify bool, data []byte) (result
 	return results, nil
 }
 
+// verifyKey verifies a Postmark key by making requests to the Postmark API.
+// It tries both server and account API key verification.
+func verifyKey(ctx context.Context, client *http.Client, key string) (bool, map[string]string, error) {
+	errs := make([]error, 0, 2)
+
+	// Try verifying as server API key first
+	valid, err := verifyServerAPIKey(ctx, client, key)
+	if valid {
+		// If valid as server API key, return immediately
+		return true, map[string]string{"type": "server"}, nil
+	}
+	if err != nil {
+		errs = append(errs, err)
+	}
+
+	// Try verifying as account API key next
+	valid, err = verifyAccountAPIKey(ctx, client, key)
+	if valid {
+		// If valid as account API key, return immediately
+		return true, map[string]string{"type": "account"}, nil
+	}
+	if err != nil {
+		errs = append(errs, err)
+	}
+	if len(errs) > 0 {
+		// If there were errors during verification, return them
+		return false, nil, errors.Join(errs...)
+	}
+	return false, nil, nil
+}
+
+// verifyServerAPIKey verifies a Postmark server API key by making a request to the Postmark API.
+func verifyServerAPIKey(ctx context.Context, client *http.Client, key string) (bool, error) {
+	return verifyKeyWithOptions(
+		ctx,
+		client,
+		key,
+		"/deliverystats",
+		"X-Postmark-Server-Token",
+	)
+}
+
+// verifyAccountAPIKey verifies a Postmark account API key by making a request to the Postmark API.
+func verifyAccountAPIKey(ctx context.Context, client *http.Client, key string) (bool, error) {
+	return verifyKeyWithOptions(
+		ctx,
+		client,
+		key,
+		"/domains?count=10&offset=0",
+		"X-Postmark-Account-Token",
+	)
+}
+
+// verifyKeyWithOptions is a generic function to verify a Postmark key with given endpoint and header.
+func verifyKeyWithOptions(ctx context.Context, client *http.Client, key, endpoint, authHeader string) (bool, error) {
+	req, err := http.NewRequestWithContext(ctx, http.MethodGet, "https://api.postmarkapp.com"+endpoint, nil)
+	if err != nil {
+		return false, err
+	}
+	req.Header.Add("Accept", "application/json")
+	req.Header.Add("Content-Type", "application/json")
+	req.Header.Add(authHeader, key)
+	res, err := client.Do(req)
+	if err != nil {
+		return false, err
+	}
+	defer func() {
+		_, _ = io.Copy(io.Discard, res.Body)
+		_ = res.Body.Close()
+	}()
+
+	switch res.StatusCode {
+	case http.StatusOK:
+		return true, nil
+	case http.StatusUnauthorized:
+		return false, nil
+	default:
+		return false, fmt.Errorf("unexpected status code: %d", res.StatusCode)
+	}
+}
+
 func (s Scanner) Type() detectorspb.DetectorType {
 	return detectorspb.DetectorType_Postmark
 }
diff --git a/pkg/detectors/postmark/postmark_integration_test.go b/pkg/detectors/postmark/postmark_integration_test.go
index a9c984c7c..e666222f0 100644
--- a/pkg/detectors/postmark/postmark_integration_test.go
+++ b/pkg/detectors/postmark/postmark_integration_test.go
@@ -23,7 +23,8 @@ func TestPostmark_FromChunk(t *testing.T) {
 	if err != nil {
 		t.Fatalf("could not get test secrets from GCP: %s", err)
 	}
-	secret := testSecrets.MustGetField("POSTMARK_TOKEN")
+	secretServerApi := testSecrets.MustGetField("POSTMARK_TOKEN")
+	secretAccountApi := testSecrets.MustGetField("POSTMARK_ACCOUNT_API_TOKEN")
 	inactiveSecret := testSecrets.MustGetField("POSTMARK_INACTIVE")
 
 	type args struct {
@@ -39,17 +40,35 @@ func TestPostmark_FromChunk(t *testing.T) {
 		wantErr bool
 	}{
 		{
-			name: "found, verified",
+			name: "found server api key, verified",
 			s:    Scanner{},
 			args: args{
 				ctx:    context.Background(),
-				data:   []byte(fmt.Sprintf("You can find a postmark secret %s within", secret)),
+				data:   []byte(fmt.Sprintf("You can find a postmark secret %s within", secretServerApi)),
 				verify: true,
 			},
 			want: []detectors.Result{
 				{
 					DetectorType: detectorspb.DetectorType_Postmark,
 					Verified:     true,
+					ExtraData:    map[string]string{"type": "server"},
+				},
+			},
+			wantErr: false,
+		},
+		{
+			name: "found account api key, verified",
+			s:    Scanner{},
+			args: args{
+				ctx:    context.Background(),
+				data:   []byte(fmt.Sprintf("You can find a postmark secret %s within", secretAccountApi)),
+				verify: true,
+			},
+			want: []detectors.Result{
+				{
+					DetectorType: detectorspb.DetectorType_Postmark,
+					Verified:     true,
+					ExtraData:    map[string]string{"type": "account"},
 				},
 			},
 			wantErr: false,