diff --git a/README.md b/README.md
index abda15d..b4199b6 100644
--- a/README.md
+++ b/README.md
@@ -186,6 +186,10 @@ This is the number of seconds between retries when attempting to download a cert
 This is the username that will be used to connect to the GlobalSign API
 * ```Password```
 This is the password that will be used to connect to the GlobalSign API
+* ```SyncStartDate```  
+OPTIONAL: If provided, full syncs will start at the specified date.
+* ```SyncIntervalDays```  
+OPTIONAL: Required if SyncStartDate is used. Specifies how to page the certificate sync. Should be a value such that no interval of that length contains > 500 certificate enrollments.
 
 ```json
   "CAConnection": {
diff --git a/readme_source.md b/readme_source.md
index 8a77d78..45fa403 100644
--- a/readme_source.md
+++ b/readme_source.md
@@ -144,6 +144,10 @@ This is the number of seconds between retries when attempting to download a cert
 This is the username that will be used to connect to the GlobalSign API
 * ```Password```
 This is the password that will be used to connect to the GlobalSign API
+* ```SyncStartDate```  
+OPTIONAL: If provided, full syncs will start at the specified date.
+* ```SyncIntervalDays```  
+OPTIONAL: Required if SyncStartDate is used. Specifies how to page the certificate sync. Should be a value such that no interval of that length contains > 500 certificate enrollments.
 
 ```json
   "CAConnection": {
diff --git a/src/GlobalSignCAProxy/Client/GlobalSignApiClient.cs b/src/GlobalSignCAProxy/Client/GlobalSignApiClient.cs
index f84dbb0..3ded199 100644
--- a/src/GlobalSignCAProxy/Client/GlobalSignApiClient.cs
+++ b/src/GlobalSignCAProxy/Client/GlobalSignApiClient.cs
@@ -37,14 +37,39 @@ public GlobalSignApiClient(GlobalSignCAConfig config)
 			OrderService = new ManagedSSLService() { Url = config.GetUrl(GlobalSignServiceType.ORDER) };
 		}
 
-		public List<OrderDetail> GetCertificatesForSync(bool fullSync, DateTime? lastSync)
+		public List<OrderDetail> GetCertificatesForSync(bool fullSync, DateTime? lastSync, DateTime startDate, int intervalDays)
 		{
 			Logger.MethodEntry(ILogExtensions.MethodLogLevel.Debug);
 			using (this.QueryService)
 			{
 				if (fullSync)
 				{
-					return GetCertificatesByDateRange(DateTime.MinValue, DateTime.UtcNow);
+					if (startDate > new DateTime(2000, 01, 01))
+					{
+						DateTime finalStop = DateTime.UtcNow;
+						List<OrderDetail > certs = new List<OrderDetail>();
+						DateTime endDate = startDate.AddDays(intervalDays);
+						if (endDate > finalStop)
+						{
+							endDate = finalStop;
+						}
+						certs.AddRange(GetCertificatesByDateRange(startDate, endDate));
+						while (endDate < finalStop)
+						{
+							startDate = endDate.AddSeconds(1);
+							endDate = startDate.AddDays(intervalDays);
+							if (endDate > finalStop)
+							{
+								endDate = finalStop;
+							}
+							certs.AddRange(GetCertificatesByDateRange(startDate, endDate));
+						}
+						return certs;
+					}
+					else
+					{
+						return GetCertificatesByDateRange(startDate, DateTime.UtcNow);
+					}					
 				}
 				else //Incremental Sync
 				{
diff --git a/src/GlobalSignCAProxy/GlobalSignCAConfig.cs b/src/GlobalSignCAProxy/GlobalSignCAConfig.cs
index 1e12136..247e9fb 100644
--- a/src/GlobalSignCAProxy/GlobalSignCAConfig.cs
+++ b/src/GlobalSignCAProxy/GlobalSignCAConfig.cs
@@ -10,6 +10,7 @@
 using Newtonsoft.Json.Converters;
 using query = Keyfactor.Extensions.AnyGateway.GlobalSign.Services.Query;
 using order = Keyfactor.Extensions.AnyGateway.GlobalSign.Services.Order;
+using System.Diagnostics.Contracts;
 
 namespace Keyfactor.Extensions.AnyGateway.GlobalSign
 {
@@ -22,6 +23,9 @@ public class GlobalSignCAConfig
         public string Username { get; set; } 
         public string Password { get; set; }
 
+		public string SyncStartDate { get; set; }
+		public int SyncIntervalDays { get; set; }
+
         public string GetUrl(GlobalSignServiceType queryType)
         {
             switch (queryType)
diff --git a/src/GlobalSignCAProxy/GlobalSignCAProxy.cs b/src/GlobalSignCAProxy/GlobalSignCAProxy.cs
index 4c261d9..ddaaac6 100644
--- a/src/GlobalSignCAProxy/GlobalSignCAProxy.cs
+++ b/src/GlobalSignCAProxy/GlobalSignCAProxy.cs
@@ -25,6 +25,7 @@
 using System.Collections.Concurrent;
 using System.Collections.Generic;
 using System.Linq;
+using System.Security.Policy;
 using System.Text;
 using System.Threading;
 using System.Web.Services.Configuration;
@@ -233,8 +234,14 @@ public override void Synchronize(ICertificateDataReader certificateDataReader, B
 			{
 				GlobalSignApiClient apiClient = new GlobalSignApiClient(Config);
 
-				DateTime? syncFrom = certificateAuthoritySyncInfo.DoFullSync ? new DateTime(2000, 01, 01) : certificateAuthoritySyncInfo.OverallLastSync;
-				var certs = apiClient.GetCertificatesForSync(certificateAuthoritySyncInfo.DoFullSync, syncFrom);
+				DateTime fullSyncFrom = new DateTime(2000, 01, 01);
+				if (!string.IsNullOrEmpty(Config.SyncStartDate))
+				{
+					fullSyncFrom = DateTime.Parse(Config.SyncStartDate);
+				}
+
+				DateTime? syncFrom = certificateAuthoritySyncInfo.DoFullSync ? fullSyncFrom : certificateAuthoritySyncInfo.OverallLastSync;
+				var certs = apiClient.GetCertificatesForSync(certificateAuthoritySyncInfo.DoFullSync, syncFrom, fullSyncFrom, Config.SyncIntervalDays);
 
 				foreach (var c in certs)
 				{
@@ -332,6 +339,15 @@ public override void ValidateCAConnectionInfo(Dictionary<string, object> connect
 
 			var apiClient = new GlobalSignApiClient(validateConfig);
 			apiClient.GetDomains().ForEach(x => Logger.Info($"Connection established for {x.DomainName}"));
+
+			if (!string.IsNullOrEmpty(validateConfig.SyncStartDate))
+			{
+				_ = DateTime.Parse(validateConfig.SyncStartDate);
+				if (validateConfig.SyncIntervalDays <= 0)
+				{
+					throw new Exception("SyncIntervalDays must be a value greater than 0 when using SyncStartDate");
+				}
+			}
 			Logger.MethodExit(ILogExtensions.MethodLogLevel.Debug);
 		}