SendGrid is Mailchimp's #1 competitor. SendGrid is a Private company that was founded in 2009 in Denver, Colorado. SendGrid is in the Email Services industry. Compared to Mailchimp, SendGrid has 900 fewer employees.
SparkPost is seen as one of Mailchimp's biggest rivals. SparkPost was founded in Columbia, Maryland} in 1997. SparkPost is in the Email Services field. Compared to Mailchimp, SparkPost generates $750M less revenue.
Constant Contact is one of Mailchimp's top competitors. Constant Contact is headquartered in Waltham, Massachusetts, and was founded in 1995. Constant Contact competes in the Digital Marketing & Publishing industry. Constant Contact generates 43% the revenue of Mailchimp.