How to not get blacklisted, trash/spam moved for sending emails? [closed]

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How to find my limitations and methods to not get blacklisted, trash/spam moved for sending emails?

I have growing number of like 10000 e-mail adressess and e-mails that I have to send on daily basis regarding:

• user registration
• reminders
• confirmations
• news

I want to send mailing to my community but am afraid of beeing blacklisted. It happend few times when years back then was sending mailings from virtual server.

Now I own my dedicated server and want come back to sending lare ammount of e-mails (all sort of reasons listed above).

Answer 1

• Make sure your mailing list is opt-in or provide an easy way for your community members to opt-out.
• Provide the opt-in/out link directly in every email message.
• Make it highly visible!
• Send only to your community members.
• Don't annoy them everyday with meaningless crap.
• Even being careful and providing opt-in/out for your members you can't force them to use it.
• Realize that email clients make it easier to just flag it as spam.

Answer 2

Don't send junk and you should be fine. If your server is configured to let them go out, then the rest is out of your control. The best you can do is to ensure you have "good looking" email content.

Spam filters are usually set up to flag certain words too, like: $%&^, %£!$ and or course $*%^. So you need to avoid the obvious ones, if your email sounds unprofessional, or looks like you are trying to market a Sex Toy Scam (for example) then you are more likely to be spam flagged.

Also, I have found providing both a HTML and Plain Text version of each email body can make a big difference in your spam scores at the other end.

Here is something that might provide some other ideas for you.

Answer 3

Other than ensuring that the people you are sending email to actually want to receive those emails by specifically opting-in for reminders/news/anything non-essential like registrations, you could try using a mass mailer like constant contact who has a RestAPI.

The email itself should be well formed. It shouldn't have any missing required headers (like Date: or To:) and the body should conform to the Content-Type header, either being all text if it's content is text, or if there is HTML, to use multipart-mime and include a text version in one part, and html in the other. Also, don't include links to shady places that could be blacklisted.