A servant smtp (Simple Mail Transfer Protocol) is used to send messages of e-mail between servers. In order to really understand of what we spoke when we talked about gratuitous servers smtp, we are going to make a resemblance; one is a species of digital mailman who gathers the email that a certain emitter wishes to send and it makes arrive until servant smtp of the adressee, so that it can read it.
One of its main advantages is that it shows the statistics of shipment of a certain message, as well as the visualizations of the same on the part of the adressees and the number of click towards the destiny page.
Gratuitous servers smtp are a machine that is in charge so much to gather as to give the e-mails that the users send. All the emails gratuitous have tie a servant smtp; for example, in the case of Gmail, the service of e-mail of Google, the servant is smtp.gmail.com.
However, it is necessary to consider that to the being gratuitous servers, a series of limitations has. In the case of companies that need to send a great volume of e-mails to their clients, these gratuitous servers smtp cannot guarantee the delivery adapted of the same because they do not use monitored directions IP.
Therefore, the main disadvantage that presents a gratuitous servant smtp is that the number of e-mail messages that can be sent to the day is limited, as well as the number of adressees.
In addition, one of its weakness is that this protocol of shipment of e-mails bases its operation on not monitored directions IP. That is to say, you do not know with whom you are sharing direction IP; the case that can occur it is a company that is dedicated continuously to the Spam shipment.
Gmail is the service of used e-mail more at the moment, as much by companies as by individuals. To form gratuitous servant smtp of Gmail is simple, but there is a series of points to consider. Next we explained how to do it step by step.
The limit established in gratuitous servant smtp of Gmail is of 100 adressees at the same time and a maximum of 500 e-mails per day. You can surpass this limit, but you run a serious risk of which Google blocks your account. In addition, if you send more post office than the established ones and/or to more adressees, service smtp makes shared use of IPs, often used by spammers, who can damage of considerable way the reputation of the company.
If you are interested in knowing other aspects related to the smtp, you can read our article How to send mail smtp authenticating with PHP.