The email

What your customers actually receive.

A short, plain message, like a quick note from your team: one product, no banners, no countdown. Written by people who have done this for merchants for decades, not by an AI, and checked for language and legal compliance. This is how the emails would look for the store “Example-ABC”:

with image
FromNina from Example-ABC
Subject🛒 Tim, a quick question regarding your order
Hello Tim,

I'm Nina from customer service at Example-ABC. While going through our recent orders, I came across yours: Candle set of 3.

Other customers often pair this with Linen throw, sand.

Maybe you already have it – then please just ignore this email. If not, it might be worth a try? Here are the link and a short description:
Linen throw, sand · Pre-washed linen, 130 × 170 cm … Read more →
I hope this is useful to you.

Best regards,
Nina from Example-ABC

P.S.
How was our recommendation? Please share your feedback with us: Good · Average · Bad

P.P.S.
If you'd rather not receive suggestions like this in the future, just reply with: STOP
This email was sent by Extra Carts on behalf of Example-ABC.
text only
FromPaul from Example-ABC
Subject🛒 Tim, a quick question regarding your order
Hello Tim,

I'm Paul from customer service at Example-ABC. While going through our recent orders, I came across yours: Cedar candle.

Other customers often pair this with Candle set of 3.

Maybe you already have it – then please just ignore this email. If not, it might be worth a try? Here are the link and a short description:
Candle set of 3 · example-abc.com/candle-set
I hope this is useful to you.

Best regards,
Paul from Example-ABC

P.S.
How was our recommendation? Please share your feedback with us: Good · Average · Bad

P.P.S.
If you'd rather not receive suggestions like this in the future, just reply with: STOP
This email was sent by Extra Carts on behalf of Example-ABC.
You choose three things — we optimize the rest
  • Form of address: formal or informal; gender-inclusive wording: yes or no
  • Sender name — enter your own, or pick from a short list
  • Replies — forwarded to your support inbox, every reply logged

Proven templates, continuously refined — no builder kit and no mass blasts. The first email goes straight to you, before anything is sent to your customers.

Better. Continuously.

Your emails get better. Without you testing.

Large merchants test with their own teams; a single store sends too few emails for that. So we compare anonymously across all connected stores which subject line works better, and every store gets the better one; your customer and order data stay limited to your store.

  1. test
  2. compare
  3. keep
  4. repeat

test subject lines from the first email · compare only with enough data

One store alone
needs around 20,000 emails to compare two subject lines reliably. With 1,000 orders a month, that takes at least 20 months.
With 1,000 stores
the same 20,000 emails would be reached in under a week. So every store gets better faster.
extra carts
only evaluates anonymous counts per subject line for this. No store sees another store's data, and we earn only on orders that come from it.
Sleep soundly, country by country

Every email is checked before it is sent. In every country by its rules.

We're starting in Germany, a market with some of the strictest rules for emailing customers. The checks are technically enforced, not just promised: if the legal basis for a recipient is unclear, nothing is sent. Live today: Germany; the remaining country profiles show where we're building next.

Selling somewhere else? Tell us where: demand decides which market we take on next.