Before we discuss this issue, we need to ask ourselves a few questions:
Frequently change the sender’s email address
Did I just register a new email account and start sending bulk emails?
Do I only use one or two email accounts to send emails?
Am I sharing the same IP address with many people?
Is the email I sent authentic?
The direct reason for emails being blocked is the poor usa tel number reputation of the sender. The main factors affecting the sender's reputation include: IP address reputation, mailbox domain reputation, email content quality, frequency and number of bulk emails sent, number of recipients marked as spam, and number of bounced emails.
Avoid using dynamic IP
For example, there are a large number of invalid email addresses or blacklisted email addresses in the emails we send. Many of the potential foreign trade customers we send to have not subscribed to our emails, which may cause complaints. The content or title of our emails are too commercial and are considered spam, etc. These factors will reduce our sender reputation and the effectiveness of email marketing will also be affected.