Customer.io

Customer.io allows small to mid-size companies that sell online to send triggered or segmented, in-context marketing or transactional (e.g. payment receipts) emails. With an emphasis on presenting timely and relevant content to individual customers, Customer.io supports A/B Testing, timed messages, a series of emails based on a trigger event, and the requisite tracking to capture what worked and what did not. Segmentation assimilate information from events and site visits and activity to locate best customers, who are profiled and monitored in detail. Customer.io can be got for free... for up to 200 profiles and 400 monthly emails to them. Beyond this $50 will buy the entry level paid package ($45 if paid annually) for sending 10,000 emails across 5,000 profiles, and $1250 will buy "Enterprise" level tracking and engaging 500,000 persons over 1,000,000 emails monthly. For every tier and plan, it's $.12 for every 1,000 additional email entreaties beyond the allotted double-the-profiles email limit. Plans can be tailored to suit infinitely varied needs, and there's no need for a quote, because customer.io offers an online calculator to suit the very large or exquisitely particular would be user. Customer.io is based in New York and has grown fairly rapidly since its initial seed round in May, 2013, though it is still a relatively small company. However it has been rapidly adapted and is popular in the US, and is used worldwide.

Customer.io starts at $150.

Iterable, Braze, and Mailchimp are common alternatives for Customer.io.

The most common users of Customer.io are from Small Businesses (1-50 employees) and the Internet industry.