PeerSpot users discussed what the most important features of a cloud email service were, and the consensus pointed to usability. This includes the service's reliability/availability, support, and migration/integration abilities as well as its compatibility with other applications. On top of the basic user friendliness of the cloud email, members want to see clean a web interface and solid security features in place, along with easy customization that contributes to a strong market perception...
I would choose MailChimp. The main reason I chose MailChimp is the wide variety of default templates available on it.
Also, I can schedule the emails to go at the specific time zone of each user, which is a cool feature to have.
@Susang Ramesh thanks for the answer.
Also, are you aware of whether SendGrid has similar features or not?
Thanks.