DKIM Record Generator
Build a properly formatted DKIM DNS record for your domain. Enter your selector name, paste the public key from your email provider, and get a ready-to-add TXT record. DKIM cryptographically signs outgoing emails so receiving servers can verify they were sent by an authorized server and were not tampered with in transit.
Build Your DKIM Record
Domain & Selector
e.g. google, default, selector1, k1, s1
Public Key
Paste the public key provided by your email service. You can paste the raw base64 key, the full PEM block, or just the key data. Headers, footers, and line breaks will be stripped automatically.
Key Settings
Generated DKIM Record
Record Type
TXT
Host / Name
default._domainkey
Value
(shown below)
v=DKIM1; k=rsa; p=
click to copy
Key Size (est.)
—
Record Length
—
Where to Get Your DKIM Key
DKIM keys are generated by your email provider. Below are the typical selectors and where to find the public key for common providers. You will paste the public key into the field above.
| Provider | Typical Selector | Where to Find Key |
|---|---|---|
| Google Workspace | google | Admin Console → Apps → Gmail → Authenticate Email |
| Microsoft 365 | selector1, selector2 | Defender portal → Email & Collaboration → Policies → DKIM |
| cPanel | default | cPanel → Email Deliverability → Manage (auto-configured) |
| Amazon SES | s1, s2 | SES Console → Identities → DKIM (uses CNAME, not TXT) |
| Mailchimp | k1 | Account → Domains → Authentication |
| SendGrid | s1, s2 | Settings → Sender Authentication → Domain (uses CNAME) |
| Postmark | pm | Sender Signatures → DNS Settings |
| Zoho Mail | zmail | Admin → Mail Settings → DKIM |
| Mailgun | mg | Sending → Domains → DNS Records |