Greylist is a technique used to check if an email sender is legitimate; it defends email users against spam. Incoming emails don’t just go straight to the recipient’s inboxes; a mail transfer agent temporarily rejects them; the receiving server requests the sending server to try sending the email again within a certain period.
If the email is legitimate, the originating server will send it again, and this time, the mail will be accepted. However, if the email is not legitimate, it will probably not be sent again since a spammer typically goes through thousands of email addresses and cannot afford the time delay to retry.
How to Avoid Email Greylist
Use a Reliable Domain
The email domain follows the @ symbol in an email address like Intima@figma.com. It takes time to warm up an email domain and earn a good reputation, so ensure you use a reputable domain. If you own a custom domain, warm it up to build a good reputation.
Take Care of Your IP-address Reputation
Just like the email domain, the reputation of your IP address is also crucial; you need to warm up your IP address and monitor your reputation to reduce your chances of getting greylisted.
Sign Your Email With a Real Sender’s Name
A real name will help you build trust with your audience and internet service providers (ISP). It can also increase your open rate and help you avoid spam filters. Using your business name, such as AJenterprise@example.com, is better than using an address such as noreply@example.com.
Allow Instant Unsubscribing
Even if you are eager to build an email list, it is important to add an instant unsubscribe option in your emails; if you do not allow people to leave at will, it can make your emails suspicious and be considered as spam.
Format the Headings and the Message Correctly
Your email headings and messages should be formatted according to Internet message format (RFC 5322) and HTML standards.