It is important to note an IP warmup plan is merely a way to help the sender identify potential weaknesses in their email program.

Starting slowly gives the sender a chance to pause or slow down sending and adjust their strategy before their reputation is severely impacted.

IP Allocation

How many IPs should I have? 

(Suggested IP count is based on desired  daily sending volume) 

No of Ips Target Daily Volume
2 25,000
2 50,000
2 100,000
2 200,000
2 400,000
2 800,000
2 1,600,000
3 2,500,000
4 3,500,000
5 5,000,000
7 7,500,000
10 10,000,000
11 12,500,000
12 15,000,000
13 20,000,000
15 30,000,000
17 50,000,000
20 80,000,000

The  number  of  IPs  needed  to  accommodate your sending volume can change  based  on  your  type  of  sending, the  domains  to  which  you  are  sending, and your sending reputation. 

T

IP Warmup Schedule 

Sending volume ramp up schedule 

(Regardless of IP count) 

Day Daily Volume
1 50
2 100
3 500
4 1000
5 5 000
6 10 000
7 20 000
8 40 000
9 70 000
10 100 000
11 150 000
12 250 000
13 400 000
14 600 000
15 1 000 000
16 2 000 000
17 4 000 000
18 Double sending volume

Ideal warm up schedules can vary greatly depending on a number of factors including: List age, list hygiene, spam reports, user engagement, domain reputation, content, domain distribution, and other factors.