SPAM, what is the limit for sending emails?

  • Posted November 5, 2014

What is the limit of emails per hour for my droplet? From what quantity shipments are considered SPAM?

If I have 1000 (or more) subscribers to my newsletter, as I proceed to send a newsletter to each of them without the process being classified as SPAM?

Thanks, Phillip.


Yes. Spam classification is based less on number of messages (although that too) and more on configuration (dkim, spf, &c), content (does it contain “v1agra,” are the links obfuscated), and reaction of users (how many mark it as spam, or never look at it).

If you have troubles with delivery, see that you pass checks, and experiment with the content a little. Make sure you use double opt-in (ask people to give you their email and then send them an email with a link to confirm they want to hear from you.

Alternatively, use an ESP like Mailgun or Mailchimp.

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CAN-SPAM Act states that you should have an opt-in. As @BOFH (love the name, by the way) said, double opt-in is best.

Furthermore, CAN-SPAM act requires an opt-out link that is respected within 24 hours (you have 24 hours to remove them from the time that they opt out). CAN-SPAM act also states that you must clearly state that it is a marketing message and provide your company name and contact info (address) somewhere in the e-mail.

As an aside: RFC states that you cannot have more than 300 recipients on any e-mail message, but it’s best to have your script send to one recipient per message.

I’ve written an (out-dated) e-mail solution that handles opt-in/opt-out. It’s open-source:

Mail Group Solution