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whawkinsivwhawkinsiv/claude-code-skills/skills/email/SKILL.md

email

Skill258 starsChanged 28 days agoMITView on GitHub

Use this skill to set up a professional email address on the founder's domain and make sure email lands in inboxes: 'hello@ email,' 'branded email,' 'business email,' 'email forwarding,' 'send from my domain,' 'SPF,' 'DKIM,' 'DMARC,' 'my emails go to spam,' or 'set up email for my app.' Covers a free forwarding setup, sending as the branded address, the three DNS records, and app email from a subdomain. Not for onboarding or win-back email sequences (use retention) or for writing outreach (use first-customers).

41 other projects use a version of this.

Adopted by

Most recently taken up by

Used with

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Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
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The file

We split this skill into the rules it gives an agent

5 rules. 0 are common, 3 are distinctive, and 2 are very specific to this project.

  • 0

    Common

    Most of the 28 edited versions we read keep these.

  • 3

    Distinctive

    This author's own choices. Worth a look.

  • 2

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Free: add the address in the inbox's "send mail as" setting, through the SMTP relay of a transactional email service.

    line 19
  2. Distinctive:

    DMARC: start with monitoring only:

    line 30
  3. Very specific:

    After 2–4 weeks of reports that show only your own services sending, change p=none to p=quarantine.

    line 34
  4. Very specific:

    Use a real reply-to address, not noreply@.

    line 41
  5. Distinctive:

    Set up the records before the first send,: not after mail starts landing in spam.

    line 48

“Common” is measured: kept by at least 6 in 10 of the 28 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

Email

Set up hello@yourdomain.com before the first outreach. A message from a personal webmail address reads as a side project. One that lands in spam is never read.

Step 1: Receive mail at the domain

Forward hello@ to the founder's existing inbox. Many DNS providers and registrars offer free forwarding (for example, Cloudflare Email Routing). Add aliases for support@ and billing@ that forward to the same inbox, and filter them by label.

Step 2: Send as the branded address

Pick one option:

  • Free: add the address in the inbox's "send mail as" setting, through the SMTP relay of a transactional email service. Verify the domain in that service first.
  • Paid and simpler: a hosted mailbox on the domain (Google Workspace, Fastmail, or similar). Choose this when the founder wants less setup, needs calendar invites from the branded address, or adds a second person.

Make the branded address the default "from" address.

Step 3: Add SPF, DKIM, and DMARC

These DNS records prove the mail is really from the domain. Without them, mail lands in spam and anyone can send mail that pretends to be the founder.

  • SPF: one TXT record that lists every service allowed to send for the domain. A domain may have only one SPF record. Merge the include: entries into it.
  • DKIM: each sending service gives you its own record. Add every one.
  • DMARC: start with monitoring only:
    _dmarc  TXT  v=DMARC1; p=none; rua=mailto:dmarc@yourdomain.com
    After 2–4 weeks of reports that show only your own services sending, change p=none to p=quarantine. A strict policy set up too early can send the founder's own mail to spam.

Verify: send a message to a Gmail address, open "Show original", and check that SPF, DKIM, and DMARC all show PASS.

Step 4: App email

  • Send password resets, receipts, and notifications through a transactional email service, from a subdomain such as mail.yourdomain.com. That keeps problems with app email from hurting the main domain's reputation.
  • Use a real reply-to address, not noreply@. Customer replies are the cheapest feedback there is.
  • Include a plain-text version of every message.
  • Marketing email needs a one-click unsubscribe link. Never send bulk marketing from the founder's personal inbox setup.

Rules

  • Keep cold outreach small: 10–20 personal messages a day from the main domain. Bulk cold email ruins a domain's reputation.
  • Set up the records before the first send, not after mail starts landing in spam.

Output

A working hello@ address that sends and receives, the DNS records added, and a test message with SPF, DKIM, and DMARC all at PASS.

Download now (ZIP)

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