There are several best practices that can help improve email deliverability:
- Obtain permission: Only send emails to people who have explicitly given you permission to do so. Double opt-in can be used to confirm that the email address is valid and that the recipient wants to receive emails from you. These are the Different Opt-in Methods for Email Subscription. Risks and Rewards.
- Use a double opt-in process: After signing up, you should send a confirmation email to verify the email address is valid and that it is the owner who signed up, this will help to avoid any complaints and decrease the chance of being flagged as spam.
- Keep a clean list: Regularly remove bounced, unsubscribed, and inactive email addresses from your mailing list to reduce the risk of being flagged as a spammer. Inactive contacts in email marketing
- Use a reputable email service provider: Many ISPs will block or filter emails sent from known spamming IP addresses. Using a reputable email service provider can help ensure that your emails are delivered. Emarsys
- Use a consistent "From" address and sender name: This helps recipients recognize your emails and is less likely to be marked as spam. Should I use a noreply from address?
- Use a clear and concise subject line: A subject line that accurately reflects the content of the email and is less likely to be marked as spam. Writing a good subjectline
- Personalize your emails: Personalized emails have a higher open and click-through rate, and are less likely to be marked as spam.
- Monitor your email deliverability: Keep track of your email deliverability rates and take steps to improve them if necessary.
- Use a good email design: Use a clear, simple design with a good balance of text and images. Avoid using too many images or links, which can trigger spam filters. Composing a good marketing email
- Test your email before sending it: Test your email design and content before sending it to your entire list, this will help you to identify and fix any issues that might cause the email to be marked as spam. Please see How to test whether your content is causing deliverability issues