Send an email with fields using "Custom Button"

I recently came across a request in which the user wanted me to create a button to send a email when a button is clicked .
The email will contain the few fields

Code for the custom button in java

{!REQUIRESCRIPT("/soap/ajax/24.0/connection.js")} 
{!REQUIRESCRIPT("/soap/ajax/24.0/apex.js")} 

var newQuoteId2 = '{!Quotes__c.Id}'; 
               alert(newQuoteId2); 
               var pageUrl = sforce.apex.execute("makeOrder_SendEmail", "sendEmail",{newQuoteID:newQuoteId2}); 

Code for the class

global with sharing class  {
 webservice static void sendEmail(id newQuoteID){
  //Creating a new email
  List mails = new List();
  profile pro = [SELECT id,Name FROM Profile  where id = :UserInfo.getProfileId()];
  system.debug('**** pro id='+ pro.Id + ' *** Name--'+ pro.Name);
  
   Quotes__c custQuotesUpdateNew = new Quotes__c();
   custQuotesUpdateNew = [SELECT id,Name,Quote_Name__c,Account_Customer__c,Phone_customer__c From Quotes__c WHERE Id =:newQuoteID LIMIT 1];
   if(null != custQuotesUpdateNew){
   Account relAcc = [SELECT Name,Website,Country__c,CS_Cust_No__c,Country_Calling_Code__c,Street_Name__c,Building_Name__c,City_or_Town__c,Fax FROM Account WHERE ID =: custQuotesUpdateNew.Account_Customer__c];
   system.debug('**** relAcc --'+relAcc); 
   system.debug('**** custQuotesUpdate --'+custQuotesUpdateNew); 
   if(relAcc.CS_Cust_No__c == null && pro!= null &&  pro.name =='C/S UK'){
     
    //new email
    Messaging.SingleEmailMessage mail = new Messaging.SingleEmailMessage();
    //send to
    List sendTo = new List();
         sendTo.add('piyushs.algo@gmail.com');
         mail.setToAddresses(sendTo);
         //sent from
         mail.setReplyTo('next email');
         mail.setSenderDisplayName('Info');
         
         //The email
         mail.setSubject('Quote ' +custQuotesUpdateNew.Name+' created without Customer Info');
         String body = 'A quote with number : ' + custQuotesUpdateNew.Name+;
         //body +='Account name' + custQuotesUpdateNew.Account_Customer__c;
                   
         body +='Quote created without the customer number on the Account ;
    body +='Below are the details';
    body +='Account Detail';
    body +='Country -'+relAcc.Country__c+';
    body +='Account Name -'+relAcc.Name +;   
    body +='Address Information';
   
         
         mail.setHtmlBody(body);
         //adding the email to the list
         mails.add(mail);
         system.debug('*******************'+mail);   
        
   }
  Messaging.sendEmail(mails);
  
  //sending the email 
  
  system.debug('*******************'+mails);
   }
  
 }
}