Tone is the real decision in a dunning email. The same declined card is a gentle reminder to a three-year customer and a warning sign on an account that has failed three times, and telling those apart from Stripe history is general reasoning. Hermes is built on Nous Research's open models for that kind of judgment, with every figure still copied out of the API response.
Run a staged conversation — no account needed. The agent handles it for real while a simulated world answers its tool calls; nothing touches real accounts, and nothing is actually sent.
Payment
SucceededPayment failed for Aurora Bakehouse, 89.00 EUR
Lucia Marin · lucia.marin@aurorabakehouse.es
Charge ch_3PkR2xLg on the 89.00 EUR Growth plan failed with decline code expired_card, against invoice in_1PkR2y for the 1 August billing period. Customer since March 2025 with twelve successful payments and no previous failures. The subscription is active and the next automatic retry is in three days. Card on file is a Visa ending 4417 that expired in July.
Using this template drops you into a guided setup. It asks exactly this, nothing else:
Connect Stripe
One sign-in. The agent acts through your account, scoped to what this template uses.
Connect Gmail
One sign-in. The agent acts through your account, scoped to what this template uses.
Connect Slack
One sign-in. The agent acts through your account, scoped to what this template uses.
Dunning policy
How you chase a failed payment - how soon you reach out, the tone, how many attempts before you stop, what happens to the account meanwhile, and which customers are too valuable to email without a person reading it first.
Business context
What your business sells and what the customer loses while the payment is unpaid, in your own words. The agent explains the situation from this and claims nothing beyond it.
Runs on Hermes
Preselected for this page — connect your Hermes account during setup, or switch to NoClick's built-in models with one click.
Watch it handle a test run
A staged conversation against a simulated world — then it’s live.
Twelve clean payments followed by an expired card is a different story from a fortnight of insufficient funds. Reading that difference is what decides whether the email works.
Billing correspondence attracts questions about where it was composed, and an open-model harness is an easier answer to give than a closed one.
It has no reason to compute one, because the figures are copied from what the Stripe tools returned and the instructions forbid rounding or estimating a retry date. The honest risk is softer, a sentence that overstates a consequence your dunning policy never set out. That is what the staged high-value renewal exists to expose.
Free to start. Guided setup, a test run against staged conversations, and it's live.