Hello,
Yes seems like simple task. Lambda function can be invoked via CloudWatch Event at scheduled interval. I would like to discuss requirement with you then we can decide cost and deadline.
I can write Lambda function using NodeJS that will call your Pixi API with authenticated manner and will do thing, we can use AWS SES for sending email or your local SMTP.
I am Sr. full stack developer & DevOps with experience in Java, JavaScript, NodeJS, AWS(Lambda, DynamoDB, RDS, S3, API Gateway, EBS, EC2, SES, etc.), Heroku, Google Cloud, Openshift, SQL(MySQL, PostgreSQL, MS SQL Server, Sqlite3), NoSQL(MongoDB, CouchDB), Linux, Nginx, AngularJS, JQuery, Bootstrap, Git, etc. I have total 5+ years experience in software development.
Looking forward working with you for a long time. Let me know if any query.
Thanks & Regards,
Arif Khan