I love SendGrid compared to ActiveCampaign and Mailchimp for it lets for me as for small business send up to 2000 mails for free. Tried Mailchimp first however it shrunk my 1800 email list to 200 letter due to "broad email" policy. So thank you Sendgrid for not blocking my email list even if it's a bit to broad and doens't have so many personal emails.
