How mailing infrastructure works
The success of the delivery of large mass mailings depends primarily on two factors: the correctness of the message content (HTML code, headers, applications) and the source of sending messages. Moreover, if the first lies on the shoulders of the customer distribution, the second is our responsibility.
In the mailing list, the source of the message is the most important. This is perhaps one of the most important factors - for example, the same Yandex allows you to receive only 200 letters per day from unknown subnets and 99% of mail services have similar restrictions.
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One of the main, if not even the most important task of UniSender’s work , is to overcome this limitation. For this we use the following solutions:
The first. A large park of servers (at the moment - 15 pieces) located in different parts of Europe: the Netherlands, the United Kingdom, and Spain. We don’t keep servers in Russia fundamentally: remember the story of ifolder.ru and maillist.ru services owned by Agave? Problems with one blocked and the other. Servers located around the world, reduce the number of blocked messages.
The second. A wide channel (at least 100 Mbit / s) allows delivering large volumes of messages per unit of time: on average, from 30 to 100 thousand letters per hour for one server (much depends on the response and size of messages), which corresponds to 8 - 28 messages per give me a sec. And this is only for 1 server - do not forget that we now have fifteen of them.
Third. Direct agreements with major postal services such as mail.ru, yahoo.com, ukr.net and others. The agreements imply that the same strict requirements regarding the number of messages per unit of time as for the others do not apply to messages from us, and FBL agreements concluded separately with the providers providing this service provide the opportunity to receive information on the statistics of users sending our letters to spam
Fourth. Automatic analysis to prevent spam e-mails that a malicious user may wish to send through our server. To do this, we prohibit attaching to messages all that may harm a computer or operating system: executable files, frames. In addition, we analyze outgoing content for the presence of stop words and suspicious, from our point of view, content.
Even despite these measures, spam blocks sometimes occur, and there is no guaranteed protection against this. Use our simple tips to avoid spamming your emails . The most important rule is very easy to remember - do not spam. Letters from you should be expected by the user.
And if it still happens that your mail still fails in the “hell for spam”, we have an employee who deals with solving such misunderstandings, communicating directly with representatives of mail services. And this is also an important part of our infrastructure.
PS This article continues the cycle of our materials on email marketing. Previous materials in our blog . On the services of Unisender .
In the mailing list, the source of the message is the most important. This is perhaps one of the most important factors - for example, the same Yandex allows you to receive only 200 letters per day from unknown subnets and 99% of mail services have similar restrictions.
')
One of the main, if not even the most important task of UniSender’s work , is to overcome this limitation. For this we use the following solutions:
The first. A large park of servers (at the moment - 15 pieces) located in different parts of Europe: the Netherlands, the United Kingdom, and Spain. We don’t keep servers in Russia fundamentally: remember the story of ifolder.ru and maillist.ru services owned by Agave? Problems with one blocked and the other. Servers located around the world, reduce the number of blocked messages.
The second. A wide channel (at least 100 Mbit / s) allows delivering large volumes of messages per unit of time: on average, from 30 to 100 thousand letters per hour for one server (much depends on the response and size of messages), which corresponds to 8 - 28 messages per give me a sec. And this is only for 1 server - do not forget that we now have fifteen of them.
Third. Direct agreements with major postal services such as mail.ru, yahoo.com, ukr.net and others. The agreements imply that the same strict requirements regarding the number of messages per unit of time as for the others do not apply to messages from us, and FBL agreements concluded separately with the providers providing this service provide the opportunity to receive information on the statistics of users sending our letters to spam
Legal mailings are not spam, but any process that requires contact with the user through his mailbox. For example, sending confirmation of registration, notifications to registered users, etc. The main difference between legal mailing and spam is that it is expected or requested by the user.
Fourth. Automatic analysis to prevent spam e-mails that a malicious user may wish to send through our server. To do this, we prohibit attaching to messages all that may harm a computer or operating system: executable files, frames. In addition, we analyze outgoing content for the presence of stop words and suspicious, from our point of view, content.
Even despite these measures, spam blocks sometimes occur, and there is no guaranteed protection against this. Use our simple tips to avoid spamming your emails . The most important rule is very easy to remember - do not spam. Letters from you should be expected by the user.
And if it still happens that your mail still fails in the “hell for spam”, we have an employee who deals with solving such misunderstandings, communicating directly with representatives of mail services. And this is also an important part of our infrastructure.
PS This article continues the cycle of our materials on email marketing. Previous materials in our blog . On the services of Unisender .
Source: https://habr.com/ru/post/127366/
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