1. A Meaningful Sender name
There is a saying that, There is never a second chance to first impression. People after opening an unknown email wants to see the sender's name first before going through the content. If it is as greek as firstname.lastname@example.org then he will mark it as spam without even thinking for a second. Use a sender name that’s simple, easily recognized, and expected by the subscribers. Make sure that your From email address is recognized as well because some email applications such as AOL display only the sender email address, not the name.
2. Constructive and Informative Subject Name
Don't present yourself stupid even before delivering about your product or information. A message with a vague Subject line like "super offer for you!!!" will absolutely be reported as spam. You can make your email recognizable by including your company or newsletter name in brackets at the beginning of your subject lines, for example "[Taragana]: The best software and technology service provider".
3. Whitelist your domain through the Recipients
This will prevent a user-based filter from flagging your message as spam and either moving it to the spam folder or inserting “[SPAM]” to the message Subject. You can include the instructions on whitelisting your domain or email address in the Email Admin Centre area.
4. Don't Make Your Content Look Like a Typical Spam
Try not to use garish, bold fonts; large, red letters, and the like. A message with a clean, readable design is not likely to be taken for spam. Remember, simplicity is a virtue that never goes unattended.
5. Don’t send mails too often
If the recipients used to receive your newsletter once a week or month, don’t suddenly start emailing every other day.
6. Strictly Maintain Subscriber's Preference
Respect the subscriber’s preferences. If the subscriber opted in to receive your “Tips & News” newsletter, don’t send them e-commerce and promotion messages, unless they clearly requested them. This will by no way be a healthy promotion for your company but you will lose the penny you had.
7. Remind the recipient about subscription
Many subscribers receive dozens of commercial email messages every day and they may forget they signed up for your newsletter. It’s reasonable to add to your Email Admin Center the information about the user’s subscription: subscriber’s email address, opt-in date, and newsletter he/she subscribed to.