Sending Thousands of Email per day without being spam

Question

I'm having a website developed with ASP.NET which is a online art competition that people can register and enroll with competition.

In my system there are lot of emails that sends on various stages of the process for a user.

As an example, one user gets:

1. Account confirmation email
2. Welcome email
3. Competition Instruction email
4. Password reset email
5. Payment confirmation email
6. Thank you email for completing the enrollment process.

Likewise I need to send various emails, so now the number of users registering per day is getting higher and higher.

So lets say there are more than 2000 - 5000. So there will be more than 10000 email sending from my noreply@mydomain.com email im using to send emails.

Anyway one email message only send for a one user. Meaning there is only one user email address in 'To:' field and no 'CC:','Bcc:' fields.

My question is is this considered as spamming ? I have a doubt that my email can be marked as spam. How i can avoid this? Is there any way to do it properly?

Answer 1

Managing your own mail server can be a pain. There's a lot to doing it right, and getting it wrong can mean landing on a blacklist. I recommend going with a service who has put in the time to ensure their e-mails get through.

You can find a rather exhaustive list of them here: Sendgrid vs Postmark vs Amazon SES and other email/SMTP API providers?

Also, if you're sending e-mails in the US, be sure to follow the guidelines of the CAN-SPAM Act .

Answer 2

At least separate emails to registered users from registration/verification emails. Send them from different IP addresses.

Make sure that recipients want to receive you emails and they can easily opt-out at any moment (after initial opt-in) also WITHOUT log in to your service.