What is Registered Post Acknowledgment Due – Complete Guide to Legal Postal Service
Understanding Registered Post AD: what it is, why it is crucial in legal matters, how to send one, the difference between speed post and registered AD, and how the acknowledgment card serves as irrefutable proof of delivery in court.
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Registered Post Acknowledgment Due (AD) is the gold standard of legal communication in India. When a statute says "send a notice by registered post," it means Registered Post AD. This service provides the sender with irrefutable proof that a document was delivered to and received by the addressee — proof that can make or break a court case. Here is everything you need to know about this essential legal tool.
What is Registered Post AD?
Registered Post AD is a premium postal service offered by India Post where: the letter/article is registered (tracked at every stage from posting to delivery), an Acknowledgment Due (AD) card is attached to the letter, the postman obtains the recipient's signature on the AD card at the time of delivery, and the signed AD card is returned to the sender as proof of delivery. This creates a chain of evidence: the postal receipt (proving you posted something), the tracking record (proving it moved through the postal system), and the signed AD card (proving it was delivered to and received by the addressee).
Why Registered Post AD is Critical in Legal Matters
In legal proceedings, proof of service is fundamental. You must prove that the other party received your notice, summons, or communication. Registered Post AD provides this proof in a form that courts have accepted for over a century. The Supreme Court has repeatedly held (most recently in C.C. Alavi Haji v. Palapetty Muhammed) that when a notice is sent by registered post AD to the correct address, there is a presumption of service under Section 27 of the General Clauses Act and Section 114 of the Indian Evidence Act — the burden shifts to the recipient to prove they did not receive it.
How to Send a Registered Post AD – Step by Step
Step 1: Prepare your document. Print the notice/letter. It is advisable to keep a copy of what you are sending.
Step 2: Visit the post office. Go to any India Post office (not a speed post center — registered post is a different service). The General Post Office (GPO) on B.B.D. Bagh, Kolkata is the main facility, but any local post office works.
Step 3: Fill out the AD card. The post office will give you a pink/green AD card. Fill in the sender's name and address (you) and the addressee's name and address (who you are sending to).
Step 4: Attach and pay. The postal clerk will weigh the envelope, calculate the postage (registration fee + postage + AD card fee), and attach the AD card to the envelope. As of 2026, the total cost for a standard letter by Registered AD is approximately ₹40–₹70 depending on weight.
Step 5: Collect the receipt. The clerk will give you a postal receipt with a unique registration number (e.g., RK123456789IN). This number is your tracking ID. Store this receipt safely — it is your primary evidence of posting.
Step 6: Track and collect the AD card. Track the letter at indiapost.gov.in using the registration number. Once delivered, the signed AD card is returned to the sender by post. It typically takes 1–3 weeks for the AD card to come back.
Speed Post vs Registered Post AD – Crucial Difference
Speed Post is faster and has tracking, but it does NOT provide the signed acknowledgment card that Registered AD does. For legal notices, courts strongly prefer Registered Post AD because the signed AD card is physical proof of delivery. Speed Post tracking screenshots are sometimes accepted by courts, but they carry less evidentiary weight than a signed AD card.
What If the Letter is Returned Undelivered?
If the registered letter is returned with endorsements like "Refused," "Not Claimed," "Left Without Address," or "Addressee Not Found," this itself is valuable legal evidence. Under Section 27 of the General Clauses Act, if a notice is sent to the correct address by registered post, it is deemed served even if it comes back undelivered — unless the addressee proves they did not receive it. "Refused" on the envelope is particularly strong evidence — it shows the addressee knew about the notice and deliberately avoided receiving it. Always preserve the returned envelope with its postal endorsements — it is evidence.
Practical Tips
- Always send to the last known address AND the current address if different
- Write the addressee's name correctly — a wrong name can undermine the presumption of service
- Preserve the postal receipt, tracking record, and returned AD card in a safe file — you may need them years later
- Take a photo of the AD card before posting, showing the addressee's name and address
Need to send a legal notice by Registered Post AD in Kolkata? Contact Advocate Panchanand Shaw at 14 Hare Street, Kolkata — 700001. Call +91 90070 00603 for professional legal notice drafting and dispatch services.