Sequences are a series of emails that you can set up to automatically deliver them to your customers at a fixed interval. Setting up email sequences helps in creating value and building strong customer relationships. 
i. Go to the Marketing dashboard. 
ii. Click on the Campaigns
iii. From the drop-down menu, select Sequences
iv. In the upper right corner of the page, click Create Sequence. 
v. Under the Content section, you can define when you want to send your emails and the content of the email.
Delay Sending By: defines the timeline of the sequence of your emails. You can even add certain conditions for sending an email.
Email Subject: write a compelling subject line to increase your open rate
Preview Text: text that will display on their notification screen
Email Content: body part of the email 
Attach Files: if you want to send any files along with the email
You can even personalize every section of your email. If you have any saved email templates, you can use that by selecting from the drop-down arrow right next to Email Template in the Email Content section. 
vi. Once all the information has been added, you can Preview your email before sending it. 

vii. Under Settings, you will see the conditions you have created for sending emails. 

viii. Press Save
Note: Once the sequence is created, you need to add the contacts to the sequence for it to start sending emails. Please click here to learn how to add contacts to the sequence.
Please check the video: