Liferay Portlet doesn't Synchronize all the mails properly. Though it shows the Mail Count in Pagination,the Pagination fails to work properly at a certain level.This is due to some unusual characters in subject/sender/to/body in your mails.You can resolve this by changing some column types from "mail_message" table.Step 1: Please make sure that your database character set is "UTF-8".If it isn't then create it as follows: create database testing character set utf-8 Step 2: Change "longtext" to "binary" for some column from "mail_message" tableas follows: alter table Mail_Message modify column sender longtext character set binary; alter table Mail_Message modify column to_ longtext character set binary; alter table Mail_Message modify column cc longtext...