CodeTwo Exchange Rules end of support: important info and timeline

We have discontinued the CodeTwo Exchange Rules product family:

• CodeTwo Exchange Rules 2016 (discontinued on June 9, 2025)
• CodeTwo Exchange Rules 2019 (discontinued on June 9, 2025)
• CodeTwo Exchange Rules Pro (discontinued on July 22, 2025)

All CodeTwo Exchange Rules products will continue to work (e.g. add email signatures), but they will not be available for purchase and they will not be supported by CodeTwo (existing customer will receive support until their current support contract expires).

We are currently focusing on the development of CodeTwo Email Signatures On-prem, the new and only CodeTwo signature product that supports Exchange Server Subscription Edition (SE).

Use the links below to learn more:

• End of support timeline: what to expect
• FAQ

End of support timeline: what to expect

• June 9, 2025 – End of support for CodeTwo Exchange Rules 2016 and 2019:
  • New licenses for these products are no longer available for purchase.
  • Existing customers can still purchase additional licenses until further notice.
  • Support contracts remain available for purchase until the release of CodeTwo Email Signatures On-prem.
• July 22, 2025 – Release of CodeTwo Email Signatures On-prem and end of support for CodeTwo Exchange Rules Pro:
  • New licenses for CodeTwo Exchange Rules Pro are no longer available for purchase.
  • Extending the support contract for CodeTwo Exchange Rules 2016/2019/Pro is no longer possible.
  • All customers with an active support contract for CodeTwo Exchange Rules 2016/2019/Pro are eligible for a free 1-year subscription of the new product.
  • CodeTwo Exchange Rules 2016/2019/Pro will continue to work in Exchange 2016 and 2019, but these products will only be supported by us until your existing support contract expires.
    
    Learn more about the new product
• October 14, 2025 – Microsoft ended support for Exchange Server 2016 and 2019:
  • CodeTwo Email Signatures On-prem no longer supports these versions.

FAQ

1. Why are you discontinuing support for CodeTwo Exchange Rules?
2. What happens after CodeTwo Exchange Rules (2016/2019/Pro) is no longer supported by CodeTwo?
3. Can I use CodeTwo Exchange Rules with Exchange SE?
4. Can you provide more information about the new CodeTwo product? 
5. I have a valid support contract until 2026 for CodeTwo Exchange Rules (2016/2019/Pro). Will I receive support until then?
6. I have a hybrid Exchange environment. Will I need to purchase subscriptions to two CodeTwo signature products to manage email signatures for both cloud and on-premises users?
7. I want to move to Microsoft 365. Do you offer any signature product for M365?
8. Will I be able to migrate all rules and settings from CodeTwo Exchange Rules (Pro) to CodeTwo Email Signatures On-prem?
9. Will I be able to use the new program in a multi-server environment?
10. Will I still be able to use CodeTwo Exchange Rules (Pro) after I migrate to the new program?​
11. I have a valid support contract for CodeTwo Exchange Rules (Pro). How many free licenses will I get after migrating to the new product?​
12. Am I eligible for a free 1-year subscription if I use CodeTwo Exchange Rules but not the Pro version?
13. How much will I need to pay for CodeTwo Email Signatures On-prem after my free 1-year subscription expires?
14. I don’t have a valid support contract for CodeTwo Exchange Rules (Pro). Will I have to purchase the subscription at the standard price?
15. Will there be a trial version of CodeTwo Email Signatures On-prem?
16. Where can I download the installation files for CodeTwo Exchange Rules (Pro)?
17. Can I use a CodeTwo Exchange Rules (Pro) license key with the new product?
18. I’m still on Exchange 2016/2019, but I plan to migrate to Exchange SE. Can I migrate to CodeTwo Email Signatures On-prem first?​

1. Why are you discontinuing support for CodeTwo Exchange Rules?

Microsoft Exchange Server 2016 and 2019 reached end of support on October 14, 2025. After this date, Microsoft no longer provides security updates, bug fixes, or technical support for these versions. As a result, we can no longer guarantee the same level of service for CodeTwo Exchange Rules products that work on these platforms. However, we released a new product that supports the new Exchange Server Subscription Edition (see FAQ 4).

2. What happens after CodeTwo Exchange Rules (2016/2019/Pro) is no longer supported by CodeTwo?

The product will continue to work (e.g. add email signatures), but it will not be:

• available for purchase (new customers);
• supported by CodeTwo.

Refer to the table below for more details:

For a more detailed timeline, see this section.

See also FAQ 4 for more information about the upcoming CodeTwo signature product that will support Exchange Server SE.

3. Can I use CodeTwo Exchange Rules with Exchange SE?

No. CodeTwo Exchange Rules 2016 and 2019 work only with the Exchange version they were designed for. Additionally, using CodeTwo Exchange Rules Pro with Exchange Server SE violates § 4 of our EULA.

4. Can you provide more information about the new CodeTwo product? 

Here are the key points:

• The license for CodeTwo Email Signatures On-prem is sold as a yearly subscription.
• The new product remains a fully on-premises solution (installed directly on your server).
• The new product offers the same range of features as CodeTwo Exchange Rules Pro.
• Migrating from CodeTwo Exchange Rules to CodeTwo Email Signatures On-prem is as simple as performing an in-place upgrade – customers just need to install the new product over their existing CodeTwo Exchange Rules installation. All rules and settings will be migrated automatically. Learn more
• All software updates and all-week tech support are included in the subscription price.
• It is the only CodeTwo signature product that supports Exchange Server SE.
• All customers with an active support contract for CodeTwo Exchange Rules 2016/2019/Pro are eligible for a free 1-year subscription of the new product. Customers whose support contract has expired can still get their first 1-year subscription with a 30% discount. Learn more
• We’re committed to providing long-term support for this product, as demonstrated by phasing out the old versions and focusing on the new software.

Learn more about CodeTwo Email Signatures On-prem:

• Product page
• Pricing, licensing and ordering details

5. I have a valid support contract until 2026 for CodeTwo Exchange Rules (2016/2019/Pro). Will I receive support until then?

Yes, you will receive support from us until your current contract expires.

Note that you can no longer purchase support for CodeTwo Exchange Rules products.

6. I have a hybrid Exchange environment. Will I need to purchase subscriptions to two CodeTwo signature products to manage email signatures for both cloud and on-premises users?

No. In a hybrid environment (Microsoft 365 + Exchange Server SE), you only need to purchase a subscription to CodeTwo Email Signatures 365. You will get a CodeTwo Email Signatures On-prem subscription for the same number of licenses, at no additional cost.

Example:

You have a hybrid Exchange environment with 100 users in the cloud and 400 on-premises (500 users in total). You will need to purchase 400 CodeTwo Email Signatures 365 licenses. That way, you will also get 400 licenses of CodeTwo Email Signatures On-prem for free. 

However, if you later migrate those 400 on-premises users to the cloud, you will need to buy additional 100 licenses of CodeTwo Email Signatures 365 to cover all 500 users.

7. I want to move to Microsoft 365. Do you offer any signature product for M365?

Yes. CodeTwo Email Signatures 365 is our email signature & branding software for Microsoft 365. You can easily migrate all your on-premises signatures, signature-adding rules and automatic replies to the new product (learn more). CodeTwo Exchange Rules (Pro) users can purchase CodeTwo Email Signatures at a lower price. Contact us to check your discount!

8. Can I migrate all rules and settings from CodeTwo Exchange Rules (Pro) to CodeTwo Email Signatures On-prem?

Yes. The transition is as quick and easy as a an in-place upgrade. All your existing settings, including rules and signature templates, will be fully supported by CodeTwo Email Signatures On-prem. Learn more about the migration process

9. Can I use the new program in a multi-server environment?

Yes. The number of servers in your organization does not affect the program’s licensing – you’ll be able to use a single product license key for CodeTwo Email Signatures On-prem to activate the program on multiple servers within the same Active Directory forest.

If you want to use the program in multiple forests, you’ll need to contact us to receive a separate license key.

10. Will I still be able to use CodeTwo Exchange Rules (Pro) after I migrate to the new program?

Your CodeTwo Exchange Rules (Pro) license key will stop working 90 days after you receive a new license key for CodeTwo Email Signatures On-prem.

If you want to continue using CodeTwo Exchange Rules (Pro) and use CodeTwo Email Signatures On-prem at the same time, instead of migrating, you’ll need to purchase a new subscription to the new product separately. Please note that in this case, you won’t be eligible for a free or discounted subscription.

11. I have a valid support contract for CodeTwo Exchange Rules (Pro). How many free licenses will I get after migrating to the new product?

You’ll receive the same number of licenses for your free 1-year subscription to CodeTwo Email Signatures On-prem – whether that’s 25, 100, or 5,000 licenses.

12. Am I eligible for a free 1-year subscription if I use CodeTwo Exchange Rules but not the Pro version?

Yes, as long as you have a valid support contract for one of the following versions of CodeTwo Exchange Rules: 2016, 2019, or Pro.

13. How much will I need to pay for CodeTwo Email Signatures On-prem after my free 1-year subscription expires?

You’ll need to pay the standard price based on the number of licenses (mailboxes) you need. You can check the pricing here

14. I don’t have a valid support contract for CodeTwo Exchange Rules (Pro). Will I have to purchase the subscription at the standard price?

No. Customers whose support contract has expired will still be able to get their first 1-year subscription with a 30% discount if they decide to migrate to CodeTwo Email Signatures On-prem. Learn more

15. Is there a trial version of CodeTwo Email Signatures On-prem?

Yes. A 14-day trial will be available, offering the same features as the full version of the program. Download free trial

16. Where can I download the installation files for CodeTwo Exchange Rules (Pro)?

You can find both the installation files and links to the documentation in this article.

17. Can I use a CodeTwo Exchange Rules (Pro) license key with the new product?

No, these are two different products. To use CodeTwo Email Signatures On-prem, you need to either:

• Migrate your CodeTwo Exchange Rules (Pro) license to a 1-year subscription to CodeTwo Email Signatures On-prem (free of charge or at a discounted rate – learn more). In this case, your CodeTwo Exchange Rules (Pro) license key will stop working 90 days after you receive the new license key for the new product.
• Purchase new 1-year subscription to CodeTwo Email Signatures On-prem.

Once you receive the license key for CodeTwo Email Signatures On-prem, be sure to use it to activate the program.

18. I’m still on Exchange 2016/2019, but I plan to migrate to Exchange SE. Can I migrate to CodeTwo Email Signatures On-prem first?

Yes. You can temporarily use the new product with Exchange 2016 or 2019. If you switch to Exchange Server Subscription Edition (SE) in the future, you’ll still be able to use CodeTwo Email Signatures On-prem. Your existing license key will work on the new server as well.

Learn more about the migration process