Ensure you have a good DATA. If not sure you filter it with a plugin or a website which helps you filter your data.
Once your DATA is filtered. Now you would need to send a welcome and permission email to them. Also request them to add you to their contact list.
Decide a date and time to send your first email. It is very important to send your emails at a time which doesn’t bother your client or disturb his work.
Monitor your results on the statistic page. Rebuild on it.
If you follow this process for your email marketing we can grantee you SUCCESS and satisfaction. If you have any queries you can email us on firstname.lastname@example.org