The NameSilo staff of writers worked together on this post. It was a combination of efforts from our passionate writers that produce content to educate and provide insights for all our readers.
Learn how to create Titan email aliases, receive mail at addresses like support@, send from an alias where supported, and manage up to 10 per mailbox.
Fix SMTP 550 spam rejections by checking SPF, DKIM, message links, blocklists, attachments, and sender reputation before sending again.
Authenticate Mailgun (TXT-based SPF/DKIM, optional MX/CNAME) or SendGrid (CNAME-based, typically 3 records) via NameSilo's DNS Manager. Always use a dedicated subdomain like mg.yourbrand.com, never your root domain, and never replace your existing MX records, which would break normal incoming corporate email.
