GenieOS · Email

Email worth opening, written in your voice.

Brief it in a sentence and the campaign arrives designed — your colours, your type, your tone — with a real editor waiting for the final say. No template wrestling, no designer to chase, no Mailchimp tab in sight.

Swipe horizontally to explore the full editor on smaller screens.

Step 01

Ask, and the email arrives.

Describe the campaign the way you would to a colleague: what is launching, who it is for, what you want them to do. The draft lands designed, not as a wall of text. Subject line, hero, body sections and a call to action, already set in your brand’s colours and type. Because the brand system does the styling, you skip the blank canvas entirely, and the first version you see already looks like you.

Then open it and everything is a block you can touch. Change the headline by hand, drag the crop, or just say what you want different and watch it happen. This is the part most tools get wrong: full control that loses the polish, or polish you cannot change. Here the design holds itself to your brand while you rearrange, reword and swap to your heart’s content.

Swipe horizontally to explore the full editor on smaller screens.
v1Directory launch
Tablet EnvelopeTheme
Send test
Deselect Delete
Add block Add image

Block

Text

Content

NEW RELEASE
Show raw HTML

Color

Inherit

Font family

Inherit (brand font)

Weight

Style

Decoration

Font size

16px

Line height

1.5x

Letter spacing

Inheritem

Padding

Top

0px

Right

0px

Bottom

16px

Left

0px
Set all sides equal

Background colour

Transparent

Border radius

0px

Border width

0px

Border style

Border colour

Inherit

Layout

Column on right …on left
Brand SystemFueld

BRAND SYSTEM

Fueld

◎ How brand works✳ Update brand
OverviewBrand BookBrand KitThemesBlueprintsMerchv2 · auto · last saved 08/06/2026, 02:47:49

FROM NAME *

Fueld

FROM LOCAL-PART

hello

[email protected] → just enter “hello”.

POSTAL ADDRESS

123 Example St, London EC1A 1AA

Required for CAN-SPAM. We’ll warn you on production sends if missing.

Footer signature lives in your themes now. Each theme owns its own footer copy + variant — pick or edit them on the Themes tab →

UNSUBSCRIBE COPY

You’re receiving this because you opted in. Unsubscribe any time.

Markdown supported. %unsubscribe_url% is interpolated at send.

INBOX PREVIEW · FUELD

A welcome that sounds like you.

Your health, in context.

The actual emails Genie writes will look exactly like this — drafted in your voice, in your colours, with your logo, and pinned to your brand version so they don’t drift.

Contact Fueld

Fueld Your health, in context.

Step 02

Your defaults, pinned.

Sender name, reply-to address, footer details and email typography live in your brand system as pinned defaults. Every campaign and sequence starts from them, so the hundredth send matches the first — no drift, and no “who changed the footer?”.

Defaults are versioned and yours to edit whenever you like; the inbox preview shows exactly what subscribers will see before anything goes out. It’s the difference between emails that are usually on brand and emails that simply can’t be anything else.

Capabilities

Built for the long game of email.

  • 01

    Brand-pinned templates

    Campaign and sequence templates carry your colours, type and footer by default — start anywhere and it’s already yours.

  • 02

    Sequences and nurture flows

    Welcome runs, launches and follow-ups drafted as connected sends, scheduled and managed from one place.

  • 03

    Welcome-sequence suggestions

    Finish a campaign and GenieOS suggests the follow-on sequence to carry new subscribers through their first weeks.

  • 04

    Subject lines in your voice

    Options written to your tone-of-voice rules — confident and warm, never clickbait you’d cringe at later.

  • 05

    Images saved to assets

    Anything generated in the editor lands in the asset library, ready for the next send or the social variant.

  • 06

    Sends through your ESP

    Deliver through Resend, Postmark, Mailgun and friends — your sending domain and reputation stay yours.

Start free with Spark

Your next email is one brief away.

Start free with Spark

Create your Spark account now. No invitation or card required. Spark gives you access to every feature; paid actions use credits. Add credit when you need it.

Start with Spark
  • Create coordinated emails, social posts and landing pages.
  • Keep your brand, copy and imagery together in one workspace.
  • Edit the details and review your campaign before launch.