Spamming in Sri Lanka

Kavinda has blogged about an email thread conversation that took place between a Hameedia Brand Manager and an email recipient called Dinesh (Kavinda, who is he?) after Hameedia decided to spam him with marketing mails. Dinesh does have a point that in Sri Lanka for dial up users it does cost money to spend time downloading spam mails.

I don’t use any local ISPs, but do any of them provide server based spam filters?