diff --git a/README.md b/README.md
index 71f43a7c..12ceddfc 100644
--- a/README.md
+++ b/README.md
@@ -85,6 +85,12 @@ This is a simplified flow, but underneath we use many parameters to ensure secur
 ## ☞ Directory structure
 This is a mono-repo that contains the circom circuits, smart contracts, the relayer and a prover server.
 
+### Circuits and Constraints:
+*Total Constraints Across All Circuits*: **3,999,432**
+
+
+<br />
+
 - `packages/circuits` contains the circom circuits, tests, scripts to generate zkeys, vkeys, and helper functions to generate circuit inputs.
 - `packages/contracts` contains the solidity contracts, tests, and scripts to deploy the wallet.
 - `packages/relayer` contains the relayer code - relayer listens to IMAP server, generate proof using prover server, and call the contract.
@@ -124,13 +130,15 @@ saved here.
 ├
 ├── /subgraph          # indexing and querying events generated by circuits.
 
-
 ```
 
+
 <br />
 
 ## ☞ Building and Running
 
+The total number of constraints across all circuits is **3,999,432**.
+
 - Refer to the [circuit docs](./packages/circuits/README.md) for more details on building and testing circuits.
 - Refer to the [contract docs](./packages/contracts/README.md) for more details on building and testing contracts.
 - Refer to the [relayer docs](./packages/relayer/README.md) for more details on building and running relayer.
@@ -148,7 +156,6 @@ And to serve the website:
 mdbook serve
 ```
 
-
 ## References
 1. S. Suegami and K. Shibano, "Contract Wallet Using Emails," 2023 IEEE International Conference on Blockchain and Cryptocurrency (ICBC), Dubai, United Arab Emirates, 2023, pp. 1-2, doi: 10.1109/ICBC56567.2023.10174932.
 
@@ -156,4 +163,4 @@ mdbook serve
 <hr />
 <br />
 
-☆ Built using [zk-email](https://github.com/zkemail/zk-email-verify) ☆
+☆ Built using [zk-email](https://github.com/zkemail/zk-email-verify) ☆
\ No newline at end of file
diff --git a/packages/circuits/src/email_sender.circom b/packages/circuits/src/email_sender.circom
index 502c0f71..d5c57c75 100644
--- a/packages/circuits/src/email_sender.circom
+++ b/packages/circuits/src/email_sender.circom
@@ -57,7 +57,7 @@ template EmailSender(n, k, max_header_bytes, max_subject_bytes) {
     signal output has_email_recipient;
     signal output recipient_email_addr_commit;
     
-    // Verify Email Signature
+    // VERIFY EMAIL SIGNATURE : 669650 constraints
     component email_verifier = EmailVerifier(max_header_bytes, 0, n, k, 1);
     email_verifier.in_padded <== in_padded;
     email_verifier.pubkey <== pubkey;
@@ -66,19 +66,21 @@ template EmailSender(n, k, max_header_bytes, max_subject_bytes) {
     signal header_hash[256] <== email_verifier.sha;
     pubkey_hash <== email_verifier.pubkey_hash;
 
-    // FROM HEADER REGEX
+    // FROM HEADER REGEX : 643296 constraints
     signal from_regex_out, from_regex_reveal[max_header_bytes];
     (from_regex_out, from_regex_reveal) <== FromAddrRegex(max_header_bytes)(in_padded);
     from_regex_out === 1;
     signal sender_email_addr[email_max_bytes];
     sender_email_addr <== VarShiftMaskedStr(max_header_bytes, email_max_bytes)(from_regex_reveal, sender_email_idx);
 
-    // SUBJECT HEADER REGEX
+    // SUBJECT HEADER REGEX : 99208 constraints
     signal subject_regex_out, subject_regex_reveal[max_header_bytes];
     (subject_regex_out, subject_regex_reveal) <== SubjectAllRegex(max_header_bytes)(in_padded);
     subject_regex_out === 1;
     signal subject_all[max_subject_bytes];
     subject_all <== VarShiftMaskedStr(max_header_bytes, max_subject_bytes)(subject_regex_reveal, subject_idx);
+
+    // EMAIL ADDRESS REGEX : 92037 constraints
     signal recipient_email_regex_out, recipient_email_regex_reveal[max_subject_bytes];
     (recipient_email_regex_out, recipient_email_regex_reveal) <== EmailAddrRegex(max_subject_bytes)(subject_all);
     has_email_recipient <== IsZero()(recipient_email_regex_out-1);
@@ -97,6 +99,7 @@ template EmailSender(n, k, max_header_bytes, max_subject_bytes) {
         recipient_email_addr[i] <== shifted_email_addr[i] * has_email_recipient;
     }
     
+    // INVITATION CODE REGEX WITH PREFIX : 43494 constraints
     signal code_regex_out, code_regex_reveal[max_subject_bytes];
     (code_regex_out, code_regex_reveal) <== InvitationCodeWithPrefixRegex(max_subject_bytes)(subject_all);
     signal has_code <== IsZero()(code_regex_out-1);
@@ -113,7 +116,7 @@ template EmailSender(n, k, max_header_bytes, max_subject_bytes) {
     }
     masked_subject_str <== Bytes2Ints(max_subject_bytes)(masked_subject_bytes);
 
-    // DOMAIN NAME HEADER REGEX
+    // DOMAIN NAME HEADER REGEX : 38219 constraints
     signal domain_regex_out, domain_regex_reveal[email_max_bytes];
     (domain_regex_out, domain_regex_reveal) <== EmailDomainRegex(email_max_bytes)(sender_email_addr);
     domain_regex_out === 1;
@@ -129,7 +132,7 @@ template EmailSender(n, k, max_header_bytes, max_subject_bytes) {
 
     email_nullifier <== EmailNullifier()(sign_hash);
 
-    // Timestamp regex + convert to decimal format
+    // Timestamp regex + convert to decimal format : 233872 constraints
     signal timestamp_regex_out, timestamp_regex_reveal[max_header_bytes];
     (timestamp_regex_out, timestamp_regex_reveal) <== TimestampRegex(max_header_bytes)(in_padded);
     // timestamp_regex_out === 1;