IP Warmup

Mailtrap offers both shared IP addresses as well as dedicated IPs.

Shared IP vs Dedicated IP

A shared IP is a default option with nearly all sending providers (including Mailtrap). A provider maintains a pool of IPs that are shared among their users.

A dedicated IP is the IP address that only you use for sending emails. As such, you have full control over your reputation and can influence it with each email sent.

We recommend dedicated IPs only if your volume regularly exceeds 100,000 emails per month.

Automated IP warmup at Mailtrap

Each newly purchased dedicated IP goes through a mandatory 3-weeks-long (in most cases) warm-up process, aimed at giving you the best possible preparation for sending mass emails.

Mailtrap automatically increases your volume each day, with about 30% more emails sent every day. Simultaneously, our deliverability experts closely monitor your stats.

At the moment the IP warm-up schedule looks as follows:

Day	Emails sent per day	Max emails per hour
1	300	60
2	390	80
3	510	100
4	660	130
5	860	170
6	1,100	220
7	1,400	290
8	1,900	380
9	2,400	490
10	3,200	640
11	4,100	830
12	5,400	1,100
13	7,000	1,400
14	9,100	1,800
15	11,800	2,400
16	15,400	3,100
17	20,000	4,000
18	26,000	5,200
19	33,700	6,700
20	43,900	8,800
21	57,000	11,400

This schedule shouldn’t, of course, limit your email sending capability. Any emails over a limit will automatically be sent via one of Mailtrap’s Shared IPs.