Here we analyze the evolution of 5 different campaigns of 4 clients of the agency, launched at different times of the day , to see how users behave in terms of openings.
Industry: Retailer B2C
Sending time: 08.30
Total openings: 33%
In the 5 hours after sending, 57.5% of the openings occurred
in the 2 hours after sending, 40.52% of the openings occurred
From 09:00 to 10:00 -first hour- the peak of openings occurred (10.69%)
The openings decreased as the hotmail email list hours passed, although between 21:00 and 23:00 on the same day of sending and between 09:00 and 14:00 the following day there was a change in the trend.
Industry: Healthcare B2B
Time of sending: 12:00
Total openings: 21%
In the 5 hours following the sending, 35.67% of the openings took place.
In the 2 hours following the sending, 20.82% of the openings took place.
From 13:00 to 14:00 -second hour- the peak of openings took place (11.35%)
The openings decreased as the hours passed, although between 08:00 and 14:00 the following day there was a change in the trend.

Industry: B2C Retailer
Time of sending: 15:00
Total openings: 61.6%
In the 5 hours after sending, 49.43% of the openings took place.
In the 2 hours after sending, 34.71% of the openings took place.
From 3:00 p.m. to 4:00 p.m. - the first hour - the peak of openings took place (19.99%)
The openings decreased as the hours passed, although between 8:00 p.m. and 10:22 p.m. and between 7:00 a.m. and 12:00 p.m. the following day there was a change in the trend.
Industry: B2B
Time of sending: 4:00 p.m.
Total openings: 61%
49.57% of the openings took place within 5 hours after sending
35.6% of the openings took place The
peak of openings took place between 16:00 and 17:00 - the first hour - was the time for openings (23.37%)
The openings decreased as the hours passed, although between 07:00 and 12:00 the following day there was a change in the trend
Industry: Food B2C
Time of sending: 21.23
Total openings: 38%
26.13% of the openings took place within 5 hours after sending 15.53
% of the openings took place The peak of openings
took place between 09:00 and 10:00 the following day - the second hour - was the time for openings (12.29%)
Early in the morning of the following day, between 07:00 and 13:00, there was a new peak in openings
Conclusion:
The best time to launch an email marketing campaign is between 07:00 and 10:00 in the morning. However, we see how campaigns that have performed very well have been launched in other time slots. This reinforces the idea that the main factor that influences openings is the quality of the database, tha