When does gmail thinks that my mails are spam

Gmail uses a complex algorithm to determine whether an email is spam or not. Here are some common reasons why Gmail might flag an email as spam:

  1. Suspicious sender: If the sender's email address is not recognized or is similar to a known spammer's address, Gmail might flag the email as spam.
  2. Unusual subject line: If the subject line contains suspicious keywords, all-caps text, or is extremely long, Gmail might flag the email as spam.
  3. Unusual content: If the email contains suspicious keywords, such as "win a prize" or "click here," or if it has a high ratio of links to text, Gmail might flag it as spam.
  4. Unusual formatting: If the email has an unusual layout, such as a lot of blank space or unusual font sizes, Gmail might flag it as spam.
  5. High volume of emails: If you receive a large number of emails from the same sender in a short period, Gmail might flag them as spam.
  6. Low engagement: If you rarely interact with emails from a particular sender, Gmail might flag them as spam.
  7. Phishing keywords: If the email contains keywords commonly used in phishing emails, such as "update your account" or "verify your information," Gmail might flag it as spam.
  8. Malware or virus: If the email contains malware or a virus, Gmail might flag it as spam or even block it entirely.
  9. Unusual attachments: If the email contains unusual attachments, such as executable files or ZIP files, Gmail might flag it as spam.
  10. Sender's reputation: If the sender's IP address or domain has a poor reputation, Gmail might flag their emails as spam.

To avoid getting flagged as spam, make sure to:

If you're unsure whether an email is spam or not, you can always mark it as "Not spam" to help Gmail improve its algorithm.