Optimizing email subject and content to improve inbox rate - AotSend Handbook

1. Verification Code Email Optimization Guide

1. Subject Line: AotSend suggests including "Verification Code" or "OTP" in the email subject. This helps speed up recognition and correct categorization of the email by the mail server.

2. Email Content: In addition to the verification code keywords, it's recommended to include supplementary text to enhance the email's clarity and classification. AotSend provides common text suggestions such as:

• a. "The verification code is valid for 30 minutes. Please complete the verification within this period."

• b. "If you did not request this verification code, please ignore this email. Additionally, we recommend checking your account promptly to ensure the security."

• c. "This is a verification code email from [brand]. Thank you for choosing us. If you have any questions, feel free to contact us."

• d. "If this verification code email appears in your spam folder, please add our email address to your whitelist to ensure you receive future verification codes promptly. Thank you for your support."

3. Email Delivery Timing: Generally delivery takes 3-10 seconds. But in specific cases, email delivery might take 1-2 minutes. To increase the success rate of new user registrations, it is recommended to include an activation link in the email content along with the verification code. This allows users to authenticate or bind their email through the link, even if they receive the email later, such as 3 minutes after it was sent.

4. Pop-Up or Notification: When users click the button to receive the verification code, AotSend suggests displaying a pop-up or notification to guide them to check their spam folder and add the sender's email address to their whitelist.

5. Whitelist Reminder: It's advisable to include a reminder in the email content asking customers to add the sending email address to their whitelist to prevent future emails from going to the spam folder.

6. Avoid using links: Some links in Gmail may trigger a security check, causing the delivered email to appear in the inbox with a delay of 3-5 minutes. To avoid this issue, please refrain from using links in your emails whenever possible.