Hello Ravi Venkat, For setting up email facility: 1. you need to install Postfix, is a free and open-source - Mail Transfer Agent (MTA) on Operating system (OS). 2. follow instructions in the following URL for configurations: http://kohageek.blogspot.in/search?q=postfix 3. then create a gmail account for your library and store username/password while doing Postfix configurations, later Koha system will be able to automatically send email notices to borrowers for their transactions i,e issue,return, overdue,etc. 4. To send overdue Notices, Home > Tools > Overdue notice/status triggers and select the library and against each - (1) column- patron category - mention no of days in "delay" 2nd column- select type of letter like, (overdue notice) in 3rd column and in 5th column enable Email with Tickmark. AND You can insert messages at - Home › Tools › Notices & Slips Edit the default template or create new notice. And find some of the sample message that we are using for Govt. Engineering College, Hassan - Library. 1) Book Check-Out (Issue) Message -------------------------------------------------------------------- Dear <<borrowers.firstname>> <<borrowers.surname>>, The following book is checked out (Issued) from the library for your card number: <<borrowers.cardnumber>> Accession No: <<items.barcode>> Call No: <<items.itemcallnumber>> Title: <<biblio.title>> Author: <<biblio.author>> Check Out on: <<issues.issuedate>> Due Date: <<issues.date_due>> This email is system generated. Please do not reply to this mail. Library and Informaiton Centre, Your Library Name ==================================================================== 2) Book Check-in (Return) Message -------------------------------------------------- Dear <<borrowers.firstname>> <<borrowers.surname>>, The following book is returned (check-in) to the library for your card number : <<borrowers.cardnumber>> Accession No: <<items.barcode>> Call No: <<items.itemcallnumber>> Title: <<biblio.title>> Author: <<biblio.author>> Borrowed On : <<items.datelastborrowed>> Library and Informaiton Centre, Your Library Name ==================================================================== 3) Pre-Due Reminder ( Before Due Date) -------------------------------------- Dear <<borrowers.firstname>> <<borrowers.surname>>, The following book will be due soon for your card number <<borrowers.cardnumber>> : Accession No: <<items.barcode>> - <<biblio.title>>, by <<biblio.author>> Due Date: <<issues.date_due>> Please return or renew them before due date. Library and Informaiton Centre, Your Library Name Please do not reply to this notification as it was automatically generated. If you have any question regarding this notification, please contact Librarian ===================================================================== 4) Due Reminder (After Due Date) ------------------------------------- Dear <<borrowers.firstname>> <<borrowers.surname>> CARD NUMBER <<borrowers.cardnumber>>, According to our current records, you have following book(s) that is/are overdue. Please return or renew them at the Circulation section as soon as possible. Title: <<biblio.title>>, by <<biblio.author>> Accession No: <<items.barcode>> Check out (Borrowed) date: <<issues.issuedate>> Due Date: <<issues.date_due>> Library and Information Centre, Your Library Name Please do not reply to this notification as it was automatically generated. If you have any question regarding this notification, please contact Librarian. ====================================================================== 5) Over Due (Final and Last Reminder) Dear <<borrowers.firstname>> <<borrowers.surname>>, According to our Library records, you have books pending/overdue for your card number : <<borrowers.cardnumber>> . Please return or renew them as soon as possible. There are two auto generated reminder emails have been sent by the system to you regarding library dues. Please refer previous emails with the subject - Item Due Reminder or Advance Notice of Item Due" for finding books details. Please note that, this is the final reminder email. <item> Title: <<biblio.title>>, by <<biblio.author>> Accession No: <<items.barcode>> Check out (Borrowed) date: <<issues.issuedate>> Due Date: <<issues.date_due>> </item> Library and Informaiton Centre, Your Library Name -------------- Hope, it help you to understand. with thanks Satish MV Librarian Govt. Engineering College, Hassan. Karnataka.