Being caught by the spam filter is killing any e-mail marketing campaign.
Hereafter a list of advices you can follow to make sure you won't be considered as a spammer:
Again, these are only some advices and in most cases you won't have any issues with the spam filter even if you don't follow them.
If you use AcyMailing to send Spam e-mails, you will obviously be considered as a spammer.
Do never buy a list of e-mails form a third party, they are full of non-valid e-mail address and your campaign will be quickly considered as spam.
Optimize your content...
Finding a good balance between your real content and your html tags is really the most important point to don't get flagged as a spammer.
Your real content should represent the main part of your e-mail.
If you add a lot of HTML tags everywhere (tr,td,table,div,p,span...) and you almost don't have any text, your spam score will be increased.
Nevertheless the opposite is also true, if you add only text with some links and don't add any html tags, your spam score will be increased as well.
You should find the good compromise between real content and html tags to don't get caught by the spam filter.
So if you're testing your Newsletter template without real content inside, you have high probability to receive your tests in your junk folder, please make sure you're testing your real Newsletter and not only your template.
Make sure you don't insert spam words in your e-mail such as "free", "sex", "pharmacy"...
Don't S P A C E out your words, don't put strange letters or characters into your emails.
In order to handle statistics, AcyMailing adds in each e-mail a small blank picture.
This is definitely not required to not be caught by the spam filter but it might help if you have serious spam issues.
You can also configure your AcyMailing : Statistics Plugin to use your own picture and not a blank one.
On all our commercial versions, AcyMailing automatically tracks your links so you can know who clicked on which link in your Newsletter.
Improve your server configuration...
Sending 10 000 e-mails in few minutes is not a good idea at all and even if your server is configured properly and your e-mail has a low spam score, you will still be considered as a spammer.
You should spread your send process if you have many e-mails to deliver (for example, send 300 e-mails every 15 minutes).
If your server is blacklisted, your e-mail will be considered as a spam e-mail.
If you're server is blacklisted, you have two possibilities :
What's the reverse DNS?
The DNS enables to locate your server using a domain name : Domain name -> Server IP
If both entries match each other, we call it FCrDNS ( forward-confirmed reverse DNS or full-circle reverse DNS ).
Some spam filters check that both entries match and if not, your spam score will be increased.
Where should I configure my reverse DNS?
This should be done on your own server, it's not related to AcyMailing.
How can I test my reverse DNS?
You can enter your website IP at http://www.dnswatch.info/ . Your domain name should appear.
For example, if we ping acyba.com, we get the Server IP 18.104.22.168.
Improve your message structure...
We recommend you to make sure the sender e-mail belongs to the same domain as your bounce back e-mail address.
On Acyba.com, we use the sender : email@example.com and the bounce back e-mail address : firstname.lastname@example.org
Do never remove your default reply-to address!!
All our paid versions include a spam filter test so you can easily test your Newsletters.
You can also test your Newsletter via http://www.mail-tester.com or using this free service:
Send a test of your Newsletter to: email@example.com and you will get a message (sent to the e-mail address you specified as "reply to address") including the spam report of your Newsletter:
Last Updated on Tuesday, 14 May 2013 11:19