In https://getprobe.io https://getprobe.io (built in Ruby) we use: AWS (RDS, S3, ECS, EC2) https://www.mailgun.com https://www.mailgun.com for emails https:/

In https://getprobe.io https://getprobe.io (built in Ruby) we use: AWS (RDS, S3, ECS, EC2) https://www.mailgun.com https://www.mailgun.com for emails https://rollbar.com https://rollbar.com for error reporting https://stripe.com https://stripe.com for payments https://gsuite.google.com https://gsuite.google.com for email, calendar, sheets https://slack.com https://slack.com (free) for chat https://trello.com https://trello.com (free) for keeping track of things