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Email for agencies

Set up each client’s email in one prompt.

Draft each client’s email flows and monthly report in Claude or ChatGPT, then review them before they go live.

The promptskills/agencies.md

Then paste it into Claude or ChatGPT.Start free
Use Nitrosend to set up the email basics for my client: 

Read https://nitrosend.com/skills/agencies.md and follow it step by step.

1. Connect Nitrosend and work in this client's own brand or client account.
2. Audit what the client already has, then build what is missing as drafts: the core flows for their kind of business, a monthly test plan and a monthly report email.
3. Send me a test of every email.
4. Ask me before anything goes live, before you change DNS and before you import contacts.

Paste it into Claude, ChatGPT, Cursor or Codex.On your phone? Email it to yourself

Set up these five email jobs for every client.

Start with these five jobs for each client, in this order. Already built a client a welcome flow? Your agent checks what exists and builds only what is missing.

  1. 01

    Email audit, then the fastest missing flow

    Find what each client is missing and build the flow that pays back first.

    1. Starts whenYou connect a client’s account and list its flows
    2. IfA store has no cart flow: build it first
    3. Wait1 to 4 hours after a checkout is left
    4. WaitUntil 24 hours
    5. WaitUntil 48 hours
    6. Stops whenThey order

    $6.77revenue per recipient from cart flows, industry average

    1 hour
    LOWLAND HOME
    Still in your cart

    Your bowls
    are waiting.

    We saved your cart. Pick up where you left off.

    A stack of speckled oat-glazed stoneware bowls beside a matching mug.
    Stoneware Dinner BowlOat glaze · Set of 4
    Return to your cart
    24 hours
    LOWLAND HOME
    Before you decide

    Good to know
    before you buy.

    • Dishwasher and microwave safe
    • Packed without plastic, ships in two days
    • Free returns for 30 days
    Read the care guide
    48 hours
    LOWLAND HOME
    Your first order

    A little off
    your first set.

    Use SAMPLE10 at checkout for 10% off. Yours until Sunday night.

    A stack of speckled oat-glazed stoneware bowls beside a matching mug.Finish your order
  2. 02

    Core flows for a store client

    Fill in the rest of the set a store earns from, in the client’s own brand.

    1. Starts whenThe audit lists what is still missing
    2. IfNo welcome: 4 to 6 emails over 14 days
    3. IfNo post-purchase: confirm, care, review, cross-sell
    4. IfNo browse abandonment: 1 email at 24 hours
    5. IfNo win-back: 3 emails after 60 to 90 quiet days
    6. Stops whenEach flow is live, or parked with a reason

    $5.75revenue per recipient from welcome flows, industry average

    Welcome
    LOWLAND HOME
    Welcome

    Pull up
    a chair.

    New pieces, restocks and the people who make them. About twice a month.

    Folded linen napkins in oat, rust and soft gray beside a small stoneware vase.See the best sellers
    Post-purchase
    LOWLAND HOME
    Order #2087

    Thanks for
    your order.

    We’ll email you when it ships.

    Stoneware Dinner Bowl, set of 4
    $64.00
    Shipping
    Free
    Total
    $64.00
    View your order
    Win-back
    LOWLAND HOME
    It’s been a while

    New on
    the shelves.

    A few pieces have arrived since your last order.

    An oak table set for two with stoneware plates, linen napkins and dried grasses.See what’s new
  3. 03

    Core flows for a service client

    Get a new lead to a first booking, then keep them coming back.

    1. Starts whenSomeone signs up or books for the first time
    2. WaitUntil the first visit is done
    3. WaitUntil a milestone, like the tenth class
    4. WaitUntil they miss twice their usual gap
    5. Stops whenThey book. A new visit restarts it
    Right away
    Tern Street Pilates
    Welcome

    Book your first
    class this week.

    New to the reformer? Start with Foundations. We have the mats. Bring water and grip socks.

    An empty sunlit pilates studio with reformer machines on a wood floor.Pick a Foundations class
    After the first class
    Tern Street Pilates

    How was your
    first class?

    Tell us in two minutes. It helps the next person decide to walk in.

    Leave a review
    Gone quiet
    Tern Street Pilates
    We saved your spot

    It’s been
    a few weeks.

    Your usual Tuesday 6pm has room this week.

    Book Tuesday
  4. 04

    Monthly test plan

    Run three tests a month for each client and write down what each one teaches.

    1. Starts whenA new month starts
    2. WaitUntil week 2
    3. WaitUntil week 3
    4. IfList under about 10,000: test big swings only
    5. Stops whenA winner is picked on clicks and logged for the team

    1.69%campaign click rate, industry average

    Version A
    LOWLAND HOME
    Back in stock

    The oat glaze
    is back.

    Bowls, plates and mugs, restocked in small batches.

    A stack of speckled oat-glazed stoneware bowls beside a matching mug.Shop the restock
    Version B
    LOWLAND HOME
    Back in stock

    Set the table
    for Sunday.

    Bowls, plates and mugs, restocked in small batches.

    An oak table set for two with stoneware plates, linen napkins and dried grasses.Shop the restock
  5. 05

    Monthly client report email

    Tell the client what email did last month and what you will do next.

    1. Starts whenThe month closes
    2. IfComplaints or bounces jumped: lead with that
    3. WaitEvery third month

    0.06%spam complaint rate, industry average

    First week of the month
    halfmoon
    Lowland Home · October

    Your email,
    last month.

    The new cart flow is your best earner. Here is the short version.

    Emails sent
    18,400
    Click rate
    2.4%
    Orders from email
    212
    Next test
    Send time
    Read the full reportPriya at Halfmoon

Benchmarks: Klaviyo flow benchmarks, October 2026 (USD); Klaviyo email benchmarks, 2026; Validity Benchmark Report, 2026.

Then hand each account over once it is built.

Invite the owner when the account is ready. They claim it and pick a paid plan before it can send. You keep a revocable seat and keep running the monthly plan.

How to run it.

  1. 1

    Copy the prompt

    Paste it into Claude or ChatGPT with one client’s website. Your agent reads the site first and asks only what it cannot find.

  2. 2

    See the client’s flows built

    It audits what the client has, confirms the plan in one message, then builds what is missing as drafts in the client’s own brand.

  3. 3

    Review, test, go live

    Your agent sends you a test of every email, then switches on only what you approve.

One brand per client in Nitrosend

Nitrosend works as a multi-client email platform: each client is a separate brand in your account, or a client-owned account you create from the Clients page. The client owns that account from day one and you keep a revocable seat, as set out on nitrosend.com/agencies.

Start free Free to start: 5,000 emails up front, then 500 free every month. No card needed.
  • One login for every client. The skill has your agent confirm the brand before each job
  • Each client sends from their own subdomain, with their own list and suppressions
  • 40% recurring commission on every plan for each client you refer. Terms apply

What your agent reads.

The skill is a plain text file you can read before you run it.

Read the skill file
skills/agencies.mdplain text
  1. A brand for each client, and an audit of what they have
  2. The core flows by vertical, built as drafts before any DNS work
  3. A monthly test plan and a client reporting email
  4. A go-live checklist and a handover that wait for your yes

The numbers to measure each client against.

The plan on this page comes from the Email Marketing Bible, the open-source email skill we maintain: 908 sources, 49 practitioners and 19 industry playbooks. Read the Email Marketing Bible.

  • 41%of email revenue comes from flows, on 5.3% of sendsKlaviyo email benchmarks, 2026
  • 68.4%of 67,336 tracked company domains had no DMARC record or sat at p=noneCipherCue DMARC data, July 2026
  • 87.2%of email reaches the inbox, industry averageValidity Benchmark Report, 2026
  • Track metrics by client vertical, because a good open rate in one is mediocre in another.

    Scott Cohen, InboxArmy
  • Most brands he audits are missing three or four of the core flows.

    Chase Dimond, Structured Agency
  • Plan tests a quarter ahead and tie each one to a business question.

    Gavin Laugenie, Dotdigital

From the team behind SmartrMail.

We’ve built email companies before. George and Ed co-founded SmartrMail, with Kam as CTO, and grew it to 12,000 stores and 6 billion emails before Relay Commerce acquired it in 2022. On Nitrosend, every client account is client-owned from day one and you keep a revocable seat.

Customers & Platforms

  • Cursor: Nitrosend plugin in the Cursor Marketplace
  • Create Academy
  • OpenAI: Nitrosend plugin for ChatGPT and Codex
  • Elita
  • Anthropic: Nitrosend is in the Claude connector directory
  • Matilda Stitch Co
  • Vercel: Nitrosend connects natively in v0
  • Conversion Factory
  • Nitrosend is a registered SpaceX Super Intelligence Marketplace Partner
  • Evatto
  • Available in AWS Marketplace: Nitrosend is listed on AWS Marketplace
  • Royals Hair
  • Basestack
  • Hill Speed Group
  • Bartley Legal
  • Global Flourishing Study
  • Grow Brave Studios
  • HapaWire

The Best AI Email Marketing Tool.

“I have all these agents that are built that are running this stuff, and you guys are great because you’re in that first wave [...] with companies built to be run by agents, not humans.”

HapaWireTyler Alfred, Owner

“The way you set up the onboarding was awesome. The level of detail.”

Greywolf AgencyMark Smith, Founder

“I love it. It looks great. That’s impressive.”

Conversion FactoryCorey Haines, FounderNitrosend affiliate

“The new wave of companies just go in headless. It’s so cool.”

Hourglass DigitalFinlay Ekins, Co-founder

“The DNS verification was awesome. I was so stoked on that.”

What If Media GroupBrandon Taylor, Agency ownerAgency partner (revenue share)

“[...] your Claude is doing all the routine-based stuff. It kind of goes through and it sends it out and it works beautifully.”

Accelerated IntelligenceBrad Costanzo, FounderNitrosend affiliate

“I migrated from MailerLite because I didn’t want another dashboard, and the drag-and-drop builder was so tacky. I just set it up once, and now Claude knows which template to use. My emails are 90% created automatically now. It saves me time.”

Go-to-market for Shopify appsOhad Michaeli, Consultant

“I’ve got accounts with Instantly and I’ve got accounts with ConvertKit or Resend or whatever, but this is the first one that I’ve seen that’s actually constructed for AI.”

GTH Digital MarketingGreg, Digital marketerNitrosend affiliate
Corey Haines@coreyhainescoNitrosend affiliate

Marketing Skills v1.5.0 is out.

Nitrosend — AI-native email, fully MCP-controlled. Build sequences, campaigns, and automations by prompting. No dashboard.

“What we love about Nitrosend is obviously it’s AI native, and it’s very, very easy for a non-technical person to just talk to AI and ask it to do a thing for them.”

Your Salon SupportBrayden Lee, PartnershipsAgency partner (revenue share)
Mark SmithFounder, Greywolf Agency

Proudly beta user. Easy to work with, and what a team. So quick with updates and fixes for my broken workflows. Well played sir!

“I’ve tried GoHighLevel four times. When I got to this part, it was just too many clicks and too many steps to just create a flow. So I can’t wait to create a flow through Claude Code.”

TalonKim Stewart, Marketing Manager
Customer reviews

Questions people ask.

What email should an agency set up for every client?

Five jobs, in this order: an audit of the flows the client already has, the missing flow that pays back fastest, the rest of the core flows for their kind of business, a monthly test plan and a monthly report. Each client gets their own brand first, and their own sending subdomain before anything goes live.

Can Claude or ChatGPT set up email marketing for my clients?

Yes. Paste the prompt on this page into Claude or ChatGPT with one client’s website. It reads a short skill file, works in that client’s brand, audits what exists, builds the missing flows as drafts and sends you a test of each. You approve what goes live, one client at a time.

Do my clients have to switch from Klaviyo or Mailchimp?

Not all at once. Your agent builds each client’s flows in Nitrosend as drafts, in their own brand, and nothing sends until you approve it. Move a flow at a time: the matching one in the client’s old tool is turned off just before its Nitrosend flow goes live, so nobody gets two.

Will my agent send anything to a client’s list without asking me?

The prompt tells it to build drafts, send tests only to you, and ask before anything goes live, before DNS changes and before importing contacts. For a hard stop on top of that, turn on Safe Mode in Nitrosend and every send waits for approval.

Who owns a client’s email account, the agency or the client?

The client. Create the account from the Clients page or through the partner API, build it out, then invite the owner. They claim it and pick a paid plan, and you keep a seat they can revoke. If you run everything and the client never logs in, a separate brand in your own account also works.

What does it cost to run client email on Nitrosend?

Free to start: 5,000 emails up front, then 500 free every month. No card needed. Contacts are unlimited on every plan, so the size of a client’s list never changes the bill. Client-owned accounts have their own plans and email allowances. Starter is $20 a month for 20,000 emails.

One prompt per client.

Create your account, add your first client as a brand, and paste the prompt into the agent you already use.

Start free
Free to start: 5,000 emails up front, then 500 free every month. No card needed.