Domains

Every email you send is signed with a sending domain you control. Receiving servers check the signature and the published DNS records to decide whether to trust your mail, so verification comes first.

What SendFlit checks

Record	Host	Purpose
DKIM (`TXT`)	`sendflit._domainkey.yourdomain.com`	Signs your mail with a 2048-bit key unique to your domain.
SPF (`TXT`)	`yourdomain.com`	Authorizes SendFlit to send for your domain.
DMARC (`TXT`)	`_dmarc.yourdomain.com`	Sets your policy for failed checks and where aggregate reports go.

Sending from a domain that isn’t verified returns 403.

Add a domain

curl -X POST https://api.sendflit.com/v1/domains \
  -H "Authorization: Bearer $SENDFLIT_KEY" \
  -H "Content-Type: application/json" \
  -d '{"name": "yourdomain.com"}'

The response includes the domain id and the records to publish.

Publish the DNS records

Add each TXT record at your DNS provider. Changes can take time to propagate.

Verify

curl -X POST https://api.sendflit.com/v1/domains/<domain_id>/verify \
  -H "Authorization: Bearer $SENDFLIT_KEY"

Verification reads the live DNS records. Run it again if the records aren’t visible yet.

List and inspect domains

Method	Path	Purpose
`GET`	`/v1/domains`	List your domains.
`GET`	`/v1/domains/{id}/records`	The DNS records to publish for one domain.
`GET`	`/v1/domains/{id}/deliverability`	Deliverability status for one domain.
`POST`	`/v1/domains/{id}/verify`	Check DNS and verify.

Subdomains

Use a subdomain, such as mail.yourdomain.com, to keep transactional mail separate from your main domain’s reputation. Register the subdomain as its own domain, then publish its records.

Get started

Core concepts

Tutorials

Guides

DNS guides

What SendFlit checks

Add a domain

List and inspect domains

Subdomains

​What SendFlit checks

​Add a domain

​List and inspect domains

​Subdomains

What SendFlit checks

Add a domain

List and inspect domains

Subdomains