Email & Identity Verification
Verification emails — confirmation links, one-time codes, 2FA — are the highest-stakes messages you send. They’re on the critical path of signup and login, so if one is slow or lands in spam, the user is simply stuck. Delivery here is a conversion and security issue at once.
Why Mailer To Go fits verification
- Fast, reliable delivery. Verification codes are worthless late. Clean authentication and managed infrastructure get them to the inbox quickly.
- Authentication that builds trust. SPF, DKIM, and DMARC alignment signal legitimacy to inbox providers — critical for links and codes that spam filters scrutinize. How it works.
- Reputation isolation. Send verification from a dedicated subdomain so nothing else you send can jeopardize it. Why.
- Suppression handling. Bounces are captured automatically, so you’re not hammering invalid addresses during signup.
Get sending
Send codes and links over SMTP from any stack — quickstart in Ruby, Python, Node.js, and Go.
FAQ
Why do my verification codes land in spam? Almost always missing or misaligned authentication. Fix SPF/DKIM/DMARC and send from a verified subdomain — see the setup guide.
Should verification share a domain with marketing mail? No — keep it isolated on its own subdomain so marketing complaints can’t delay a login code.
Ready? Get started.