Integrations
Email providers
Galactic sends through your account, not ours. These are the providers it speaks to and what each one needs.
Supported providers
Resend and Amazon SES are the two to choose between for a new campaign; Mailgun and SendGrid are supported for an account you already have. Whichever you pick, the key stays yours and the mail leaves under your reputation.
The DNS you need
Three records on the sending domain, and all three must pass. Your provider generates the exact values; what follows is what each one is for, so you can tell which has broken when mail starts landing in spam.
Verify it from a message that actually arrived rather than from a checker: open it in Gmail, choose Show original, and read the three lines at the top.
- SPF
- A TXT record naming the servers allowed to send as you. Without it, anything can.
- Example: v=spf1 include:amazonses.com ~all
- DKIM
- A key in DNS that signs every message, so a receiving server can check the message really came from you and arrived unaltered.
- Example: resend._domainkey.mail.example.com CNAME …amazonses.com
- DMARC
- A policy saying what to do when SPF or DKIM fails. Gmail now requires bulk senders to have one at all.
- Example: v=DMARC1; p=none; rua=mailto:dmarc@example.com
- Send from a subdomain, so cold outreach cannot damage your main domain's reputation.
- Add the provider's custom return-path records, so SPF aligns with your From domain rather than theirs.
- Give the sending subdomain an MX record — a From domain that cannot receive mail is a negative signal, and replies to it bounce.