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Sender score IP warm up

Whether you are a newbie or an experienced professional to the game of email, you have probably run across the concept of warming up an IP (Internet Protocol) to enhance delivery performance. Since we often find ourselves describing the process to our customers, we realized we would write something to describe the fundamentals. Below are the most basic questions described which will help you to understand it.

1. “Warming up an IP” What Does it mean actually?
IP warm up is a continuous process that happens progressively, and this process have a main objective that is to build reputation as genuine email sender. ISP starts analyzing the traffic when they notice that it is coming from a fresh or cold IP. The most informing aspect in the eyes of ISP is the sending amount, it is best to begin delivering low to average amount (e.g., up to 1 thousand emails/month), progressively going up to bigger amounts (e.g., up to 5 thousand emails/month). It will provide an opportunity to observe the way your receiver treats your email and your sending schedule. 
2. Why my IP need to be warmed up?
ISPs can’t give you the reputation score when you are starting with fresh IP. Since this reputation will progressively determined whether or not your emails will get pass their SPAM filtration, it’s obviously really important. If you don’t want to attract the ISPs attention towards your activities stay low by sending less amount of emails (e.g., <8,000 – 10,000 emails/month). If you want to go above these numbers you should make the warm up procedure your priority concern.
Often times, the history of your IP is also an essential determinant of an ISPs preliminary assessment. Here are some free tools where you can check your IP reputation,
3. How to warm up IP address through right procedure?
When the first time you deliver email from a fresh and clean IP, ISP SPAM filters have to make a fast decision. Unfortunately, in this situation they do not have enough information to make an intelligent decision. Therefore, you have to give them something to work with – just not too much and not too quickly!
Below is a “schedule” for warming up your sending which we recommended to our customers for newsletters & marketing campaigns, transactional email and new businesses:
(mailings can be broken up into smaller batches sent every 4 to 6 hours)    
Send to 5,000 recipients on days 1, 2 and 3    
Send to 12,000 recipients on days 4, 5 & 6    
Send to 20,000 recipients on days 7, 8 & 9    
Send to 30,000 recipients on days 10, 11 & 12    
Send to 60,000 recipients on days 13, 14 & 15    
Send to 100,000 recipients on days 16, 17, & 18    
Send to 150,000 recipients on days 19, 20 & 21
ISPs keep per month backgrounds of all the email being sent to their systems. Therefore, you can anticipate to achieve an adequate warm up within about 1 month. You should be able to progressively improve your outbound traffic from about 1,000 emails/hour (at the outset) up to 10-20,000 emails/hour when the procedure is finish.
4. What does Alphasandesh do to get prepared its IPs for their customers?
We are regularly operating on different techniques to allow our clients to begin delivering the email amount that their business requires as soon as possible. We take the first thing of analyzing the history and hygiene of the IPs that we put into our stock – if an IP block does not meet our requirements, we deliver them back. Once we’ve identified that our IPs have an appropriate pre-existing reputation, we then propagate those with the high reputation first. This gives IP’s with smaller reputation a while to cool off a bit and get prepared for upcoming task.
We are continuously innovating in this area, because we see it as an essential piece of our overall service providing.
You might be thinking, “why haven't I experienced this whole warming up problem at other ESPs?” The answer is simple: many of them, especially those targeted on email promotion, do not offer dedicated IPs to their clients. Most often, ESPs simply place everyone on a shared pool by default. While it may be more economic and more complicated technically, we think to encourage our customers by enabling them to earn their own reputation on their IP.
Questions or Comments?
We wish this post is beneficial for all email professionals. Please ask your questions, offer feedback depending on your own skills and experience or make suggestions to help us all become smarter in our delivering routines. As always, we welcome your reviews and feedbacks via comment area below, our Twitter and Facebook pages.
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