Email marketing for small business, with your list already built

Most email marketing for small business fails before the first campaign is ever sent, and it is rarely the writing that kills it. It is the list admin: exporting customers from your invoicing system, importing a CSV into a marketing platform, deduplicating, and then keeping unsubscribes in sync between two tools forever. OneBookPlus removes that step entirely. Campaigns live inside the same platform as your invoicing, quotes, bookings and CRM, so every customer you have ever invoiced or booked is already a contact you can email today.

That contacts-already-in-app difference compounds every time you send. When you create a campaign, you choose the audience from live CRM records: everyone, contacts carrying a specific tag, contacts from a particular source, or a hand-picked list. Anyone who has unsubscribed is excluded at send time, automatically, because the opt-out lives on the same contact record your invoices do. Merge fields personalise each email with the customer's first name and company. There is no sync job, no Zapier bridge, and no moment where your billing system and your marketing list quietly disagree about who your customers are.

Sending is fast even if you have never run a campaign before. Start from templates for re-engagement, seasonal promotions and follow-ups, or give the AI a one-line goal and edit its draft. Add a second subject line and OneBookPlus runs an A/B test, assigning variants round-robin and attributing opens and clicks to each one separately. Schedule the send for a sensible hour, then watch results come in: sent, delivered, opened, clicked and bounced, per campaign and per individual recipient, with a campaign analytics view comparing open and click rates across everything you have sent.

Compliance with the Spam Act 2003 is engineered in rather than left to you. The Act requires consent, sender identification, and a functional unsubscribe facility honoured within five business days. Every marketing email OneBookPlus sends identifies your business and carries a visible unsubscribe link plus RFC 8058 one-click unsubscribe, the standard that lets recipients opt out from a button in Gmail or Apple Mail without hunting through the footer. Opt-outs are recorded in a ledger with a timestamp and flagged on the contact immediately, so no future campaign can reach that address. Consent itself remains your responsibility, but emailing your own existing customers puts you in a far stronger position than any purchased list ever could.

The pricing model is different too. Mailchimp's Essentials plan starts around US$13 per month for 500 contacts and rises as your list grows (mailchimp.com/pricing). Klaviyo starts around US$20 per month for 500 profiles and scales with active profiles (klaviyo.com/pricing). Brevo charges by email volume instead, from around US$9 per month (brevo.com/pricing). With OneBookPlus, email campaigns are included in the Starter plan at $29 per month, and that subscription is not a marketing bill: it also covers invoicing, quoting, bookings, CRM and full double-entry accounting. You are not paying per contact, and you are not paying a second subscription to talk to customers your business software already knows.

The same module quietly handles your reputation. Automated review requests fire when a job is completed or an invoice is paid, with multi-touch follow-ups on configurable delays that can alternate between email and SMS. The customer lands on a rating page: a happy customer is one click from your Google review link, while a low rating additionally opens a private make-it-right form so you hear about the problem before the internet does. Your dashboard tracks requests sent, ratings received and your recent Google reviews in one place. The multi-touch Reputation Engine runs on the Growth plan; the single post-booking review ask is on every plan.

When you outgrow one-off sends, drip sequences take over: multi-step email flows with day offsets, built in a visual flow builder and triggered automatically when a new contact is added. SMS campaigns reach the same list on prepaid credits with the same opt-out handling. And because the free plan includes invoicing and CRM, your list is already building before you spend a dollar on marketing: start free, and switch on campaigns when the list is worth emailing.