We have an existing smtp environment setup in an EC2 instance which is used to send Transactional emails like password reset. Now we have a requirement to send System emails to a large user base in the range of > 1000 emails per day.
First question is: Is Amazon SES delivery reliable ?
Second: Should we use our own SMTP instance or SES ? I Think if we use our SMTP server then sending large number of emails will eventually cause the mails landing in spam.
As the mails are important system emails, and not promotional bulk email. Delivery is a major concern.