It could be possible that we will not be able to communicate with you over e-mail address you enter during the registration. It may be due to the increasing levels of SPAM filtering employed by both ISP's and your computer. If you use an email address with the domain of the type "@gmail.com, @aol.com, @yahoo.com, @rediffmail.com, @hotmail.com, @xxx.ac.rs, @ptt.rs, @eunet.rs, @sezampro.rs ….." or if your institution has a particularly restrictive anti-spam filter, it is possible that you would not receive the messages from Journal of the Serbian Chemical Society. Anti-spam filter can block our emails. We suggest therefore that you check the configuration of your mail box or use a different type of email address. Please ensure that your ISP / personal SPAM blocking software allows emails from @shd.org.rs and that you are not blocking our mail server (tesla.rcub.bg.ac.rs).