What are some alternatives?
When comparing Sparta and Cold Email Analyzer by Mailshake, you can also consider the following products
Close - A CRM with built-in calling, SMS, and email
Cold Email Hacks - Proven cold email templates and tactics for B2B startups
SalesWise - A gorgeous launchpad for sales people
Cold Email Generator - Quickly create a 5-touchpoint email campaign
Hoopla - Your public library at your fingertips.
esimdb - The easiest way for travelers to find the best eSIM