Managing a large list of email addresses manually will sound crazy ,in order to prevent this,you will need to buy a good mail autoresponder.Autoresponders are the stronghold for all your email -marketing-campaigns, they handle the task automatically, which permits you to devout more time on writing your promotional emails. If you are new to the internet marketing , you may not be concerned with some of the more advanced characteristics offered by various autoresponders.If you should an autoresponder, there are a number of characteristics to put in consideration such as those listed below. 1.Multiple lists- handling multiple email list should not be difficult for a good autoresponder.Because limitation of oneself to a single list can affect ones business severely.You may have it in mind to maintain a number of different lists for customers ,prospect, and so on. 2.Hosting- another characteristics to consider is whether you want the autoresponder to be hosted by someone's else server or hosted locally on your own computer or server.The point listed above has its advantages and disadvantages.If hosted on a third party server,you will need to pay a monthly subscription to the party which include the technical support,if hosted locally you will only have to pay a one-time cost for a locally hosted autoresponder,this will reduce the amount of money you will pay at least.But unfortunately,you will handle the technical difficulties you came across,it is advisable to go for the hosted option if you are not familiar with how to use computer. 3.Easy integration-integration of other mailing list into the one you have should be a good characteristics of a good autoresponder.This is necessary if you got a separate email list,you certainly won't want to be forced to throw away the email list simply because it cannot be combine.With all this characteristics explain above .You should be able to choose a good autoresponder of your choice by simply looking at the criteria you have for your business as well as the size of your purse to find the one that best suites your needs.Your business will definitely boost if you take time in choosing the effective autoresponder of your choice.