Mailjet is a Paris-based, all-in-one Email Service Provider (ESP) that allows businesses to send both marketing and transaction email. Founded in 2010 by Julien Tartarin and Wilfried Durand, the company now serves over 35,000 customers. Mailjet is one of the startups taken on by SaaS Startup studio eFounders. eFounders was first founded in 2011 by Thibaud Elziere. Mailjet initially raised $300,000 through eFounders in 2012, then $3.3 Million through Series A later that year and a further $3 Million in 2014 through Alven Capital, eFounders and private investors. Mailjet reached the 1 Billion emails sent mark in mid 2012. In 2015 it raised an additional $11 Million through Alven Capital, Iris Capital and Seventure Partners to grow its team to 100+ employees, with the aim to attract larger clients. In a continuous effort to fight against spam and messaging abuse, Mailjet was granted membership with MAAWG, the messaging anti-abuse working group.