Your client book is a subscriber base waiting to be switched on.
Every client on a retainer is a subscriber waiting to be switched on. SendTo gives you a branded platform to put them on this week — deliverability engineered in, the platform doing the production, billing in your name. A handful of the clients you already have covers it. The rest is margin.
Email is the service clients renew for. It should be the one you make the most on.
Ask any agency owner which service keeps a client on retainer and the answer is usually email. It is measurable, it is regular, and it produces the report the client’s boss reads. And yet it is the service agencies most often run at a loss — on a public tool that charges per contact, under a brand that is not theirs, with production that eats a designer and a copywriter for a day per campaign, and a deliverability story they cannot control.
The result is an agency that sells email, does the work, carries the blame when something lands in spam, and builds equity in somebody else’s platform. When the client leaves, they keep the tool. The agency keeps nothing.
SendTo reverses every part of that. The platform is yours commercially. Deliverability is engineered. Production is largely automated. Pricing is one flat fee, and the profit on every client is yours to set.
Start with the retainer clients. The platform is covered before you finish the list.
Add the rest as the reports land. There is no per-client fee, so the twentieth client costs you nothing more than the tenth — and every one of them is billed through the platform, in your name.
Move the book in days, not quarters
Create a client in seconds. The platform seeds a sample workspace, proposes and registers brand-matched sending domains and starts warming them. Import the client’s list — the wizard maps their spreadsheet and verifies every address as it loads. Build the first campaign from a brief. Most agencies move their whole book in the first week or two.
- Client accounts with sample content, in seconds
- Domains registered, authenticated and warmed for every client
- Lists imported and verified with plain-language reasons
Production that fits inside the retainer
A brand preset per client keeps the voice consistent. The AI designs the email and its variations, builds the landing page and reviews the campaign before launch. Your team edits, approves and ships. A campaign that took a day takes an afternoon — and the afternoon is spent on what the client will notice.
- Designed HTML emails in each client’s brand
- Landing pages from the same brief
- Pre-send review on every campaign
Reports that renew retainers
Human opens separated from scanners. Delivery per sending domain. Results per variation. A share link that opens under your brand without a login. This is the report that turns “does email work?” into “what should we send next?”
- Human vs automated opens on every report
- Per-domain and per-variation results
- Share links under your brand
● Automated 12.1%
Scanners never count as customers.
| Variation | Subject line | Human opens | Clicks |
|---|---|---|---|
| A · winner | Your six-month check-up is due, {first name} | 33.2% | 7.4% |
| B | Six months already? Let’s keep that smile on track | 29.6% | 6.2% |
Build, send and read the report — all in the platform Harbour & Finch built for you.
A team that works across every client
Invite your account managers and creatives with roles. They work inside any client account from one login. View-as access lets anyone on your team see what a client sees. Usage per client is on one screen — the numbers behind every invoice.
- Owner, manager and member roles
- View-as for any client account
- Per-client usage for invoicing
Harbour & Finch moved fourteen accounts in two weeks — and added a subscription line to every invoice.
A regional full-service agency running email on three public tools consolidated every client into one branded portal. Domains for every client came online without a ticket, the first campaigns went out within days, and the monthly review moved from “does email work?” to “what next?”
Claire Whitfield, Founder
What changes for the agency
A new line on every invoice
Platform, campaigns, pages, verification — sold as one monthly service, produced mostly by software, billed in your name.
The same team, twice the clients
When production takes an afternoon instead of a day, account managers carry more accounts without burning out.
Equity you keep
Every client you onboard makes your platform more valuable. Nobody cuts you out by finding a cheaper login — the login is yours.
Agency questions
How many clients can I run?
As many as you have. There is no per-client fee, and every client is billed through the platform in your brand.
Can clients log in themselves?
Yes, at your domain, under your brand. Some partners run fully managed accounts, some let clients self-serve, most do a mix.
What about the clients I manage on other tools today?
Export their lists, create their accounts, import. The importer verifies as it goes and the platform handles their domains. Partners typically move the book in a week or two.
Do I need a deliverability specialist?
No. Domains, authentication, warmup, balancing, pacing and suppression are engineered into the platform, and every campaign gets a specialist read before launch.
How do I invoice?
However you like. The partner view shows usage and results per client per month, and billing runs under your brand.
Bring your client book across this week.
One portal, your brand, every client. Set up in minutes.
No contract · Cancel any time · Explore everything before you pay