Many websites maintain "blacklists" of common disposable email domains. A custom domain is unique to you and unlikely to be on these lists.
docker run -d -p 3000:3000 \ -e DOMAIN=temp.yourdomain.com \ -e CUSTOM_DOMAIN=temp.yourdomain.com \ --name tempmail \ tempmaildev/tempmaildev create temporary email with custom domain
For businesses or developers, using a domain that matches your brand builds credibility during testing or outreach. create temporary email with custom domain