1
Enter your company's legal name and contact details
Complete the letterhead with your full registered business name, physical address, phone number, and official email address. This must match the legal entity name used in any related service agreements or privacy policy.
π‘ If your website migration coincides with a rebrand or name change, use the new legal name in the letterhead and reference the former name in the announcement clause for clarity.
2
State the new URL prominently in the opening paragraph
Write the new website address in full β including https:// β in the first paragraph of the letter. Do not abbreviate or hyperlink only; spell out the complete URL so it is readable in printed and plain-text formats.
π‘ Repeat the new URL at least twice in the letter β once in the opening announcement and once in the instructions-to-update-records clause β so recipients who skim do not miss it.
3
Set and state the effective date
Enter the specific calendar date on which the new website becomes the primary address. If you are running a transition period, also enter the date the old URL will be retired or redirected.
π‘ Give at least 30 days' notice before retiring the old URL β 60 days is standard for B2B clients who may have internal systems or documents referencing the old address.
4
Summarize only the changes relevant to the recipient
In the summary of changes clause, list the two or three updates that directly affect how the recipient uses your website β a new client portal, a new order form URL, or a new contact page. Omit internal or cosmetic changes.
π‘ Tailor this section by recipient segment if you are sending different versions to clients, vendors, and press contacts β each group cares about different features.
5
Address data and account continuity explicitly
If your website includes a client portal, login area, or e-commerce account system, add a clear statement confirming that existing credentials and data have been migrated. Include the support contact for login issues.
π‘ Even if migration was seamless on the back end, clients expect an explicit confirmation β omitting this clause generates preventable support inquiries.
6
Reference your updated privacy policy
If the new website uses a different CMS, analytics platform, or cookie management tool, your privacy policy must be updated. Add the privacy policy URL and effective date to the letter, especially for contacts in the EU, UK, or Canada.
π‘ Check whether your new platform's cookies or tracking pixels require a new cookie consent banner under GDPR or CCPA β the letter is not a substitute for on-site consent mechanisms.
7
Add a named contact and sign the letter
Include a specific person's name, title, direct email, and phone number as the contact for questions. Sign the letter with the name and title of the authorized signatory β typically the CEO, marketing director, or account manager.
π‘ For high-value client relationships, consider having the account manager or relationship lead sign the letter personally rather than using a single company-wide signatory.
8
Proofread the new URL before sending
Test every URL mentioned in the letter β the new homepage, any portal links, and the privacy policy page β in a browser before distribution. A broken or misspelled URL in a formal announcement letter is a credibility risk.
π‘ Send a test version to an internal email address and click every link in both the Word and PDF versions to confirm they resolve correctly.