They are DNS records that prove your emails really come from your domain. Mailbox providers use them to decide whether to trust your mail.
New: Own SMTP plans now start at ₹2,999 a year with unlimited sending. See plans →
New: Own SMTP plans now start at ₹2,999 a year with unlimited sending. See plans →
One-click domain verification and DKIM key generation, with clear DNS instructions for SPF, DKIM and DMARC. Authenticated mail is far more likely to reach the inbox.
Gmail and Yahoo expect bulk senders to authenticate their domains.
Mailbox providers check every email for proof that it comes from the domain it claims. Without SPF, DKIM and DMARC, even genuine emails can be treated as spam or rejected.
GO MAILBOX generates the records you need, shows you exactly what to add at your domain provider and checks them for you. Once verified, every campaign and API email is signed automatically.
Enter the domain you send from, such as yourbrand.in.
GO MAILBOX shows the SPF, DKIM and DMARC records to add.
Paste them at your domain provider, or ask us for help.
Click verify and start sending from an authenticated domain.
Authentication made simple.
Check your DNS records with a single click.
Keys are created for you, no command line needed.
Clear records and instructions for each standard.
Authenticate every brand or client domain you send from.
New domains ramp up automatically after verification.
Our support team can walk you through DNS changes.
Anyone sending from their own domain.
Set up a new domain correctly from day one.
Re-authenticate when you switch to GO MAILBOX.
Verify a separate domain for each client.
Authenticate domains used by your app for API email.
What is SPF, DKIM and DMARC?
They are DNS records that prove your emails really come from your domain. Mailbox providers use them to decide whether to trust your mail.
How do I verify my domain?
Add the DNS records shown in GO MAILBOX at your domain provider. Verification and DKIM key generation are one click once the records are live.
Do I need technical help?
Usually not. If you get stuck, our support team can guide you through the DNS changes.
Create a free account, import your list and send your first campaign. 14 days free, no credit card.
Enterprise bulk email marketing. A product of Tech Guru IT Solutions, New Delhi.
© 2026 GO MAILBOX · Tech Guru IT Solutions