Several factors can influence whether an email is flagged as spam:
Content Quality: Poorly written content with excessive punctuation, all caps, or spammy phrases. Sender Reputation: Your domain's history and behavior play a crucial role. Email List Quality: Sending emails to unengaged or purchased lists can trigger spam filters. Email Authentication: Lack of proper authentication protocols like SPF, DKIM, and DMARC. Frequency and Volume: Sending too many emails in a short period can raise red flags.