How to improve Email open rate

The success of your email marketing services is assured only if your emails are being opened by your users. So, in order to ensure your campaign “open rate,” you must keep these points/ideas in mind - 1. Always Keep your subscriber email list up to date because people used to change their email address. 2. Try to Avoid spam filter if possible 3. Always Send mails at the right time as per your users. 4. Write a relevant & useful subject line. 5. Try to keep your email tone casual and friendly 6. Always keep your content relevant & engaging