One of the primary concerns for marketers considering new gTLDs is email deliverability. While traditional gTLDs like .com are widely recognized and trusted, newer gTLDs may initially face scrutiny from email filters. However, with proper authentication measures such as SPF, DKIM, and DMARC, these concerns can be mitigated. Using reputable email service providers and maintaining a good sender reputation are also crucial in ensuring emails reach the inbox.