The recipient may be using security software to protect against spam. If security software is in use, it is not uncommon for emails that are not spam to be blocked.
Since the sender cannot handle this issue, the recipient must set up their email to allow receiving emails.
Blocked by the mail server
If an email is caught by the recipient’s server’s spam protection, it will be considered junk mail. For example, if the email you sent is considered spam or spoofed, it will be blocked by the mail server.
Each ISP accumulates specific database by industry a huge amount of information about spam emails in a database and uses that information to combat spam, such as by using spam filters.
Uses phrases or symbols that are easily identified as spam
There are certain phrases and symbols that are easily identified as spam. For example, phrases such as “free” and “dating” as well as exclamation marks (!) are examples of such phrases and symbols. If you use these phrases and they use it during her symbols too often in the body of your email, your email will be more likely to be identified as spam, so be careful.
When sending an email, make sure you are not using phrases or symbols that could easily be identified as spam.
Violating email sending policies
In order to dating data maintain quality of service, ISPs have policies regarding bulk email senders.
Emails that violate the email sending policy are subject to blocking because they put a strain on the receiving server. For example, if a mass email containing many invalid email addresses is sent, or if a large amount of access is received at once, emails from that sender may be blocked.
