Gmail spam filter can block your emails with links to Facebook
Gmail may restrict or block hyperlinks directing to Facebook within email messages
gmail blocking outgoing emails with links
Gmail may block outgoing emails with links due to several reasons, including spammy content, suspicious senders, high rates of bounces, and blocked IP addresses. To prevent Gmail from blocking your outgoing emails, ensure that your emails are well-written, relevant, and provide value to the recipient. Avoid using spammy keywords, links, or attachments, and maintain a strong sender reputation by authenticating your emails using SPF, DKIM, and DMARC. Additionally, avoid sending emails from shared hosting environments and gradually increase your email volume to avoid triggering Gmail's spam filter.