Email Automation for Accounting Offices

MailerBit automates email communication for accounting offices. Send tax payment reminders with PIT, VAT, and ZUS amounts automatically every month. Set it up once — emails go out on schedule.

Email Automation for Accounting Offices

Stop spending hours every month copying tax amounts into individual emails. MailerBit sends tax payment reminders, deadline notifications, and billing updates automatically — set it up once, it runs every month without you lifting a finger.

The Problem

Hours of Manual Work

Every month you copy PIT amounts, VAT totals, and account numbers into individual emails for each client. With 50+ clients, that is an entire workday wasted on repetitive copy-paste.

Risk of Mistakes

Wrong amount in the wrong email. A decimal in the wrong place. A client receiving someone else's tax data. Manual sending means manual errors — and in accounting, errors cost money.

Same Work, Every Month

The email structure never changes — only the amounts do. Yet every month you repeat the same process from scratch: open spreadsheet, copy amount, paste into email, send, repeat.

How MailerBit Solves This

1

Import your client data via CSV

Upload a CSV file with your client list and their individual data: name, email, PIT amount, VAT amount, ZUS amount, account number, payment deadline — as many fields as you need. MailerBit stores all of it.

2

Create an email template with merge tags

Write your email once, using merge tags where individual data should appear: {{pit_amount}}, {{vat_amount}}, {{zus_amount}}, {{account_number}}. Each client receives their own correct amounts automatically.

3

Schedule a recurring send

Set the recurring send to run automatically on the 20th of each month (or any day you choose). MailerBit sends all emails on schedule — you just update the amounts in your contact list when they change. No manual sending required. Your own fee invoices can go out the same way: with payment tracking you see which clients received and opened the invoice, who has paid and who is overdue.

Example Email

From: your-office@yourdomain.com

Subject: Tax payment reminder — April 2026

Dear {{client_name}},

Below are your tax obligations for April 2026. Please make the payments by the deadline shown below.

PIT:{{pit_amount}} PLNVAT:{{vat_amount}} PLNZUS:{{zus_amount}} PLNAccount:{{account_number}}Deadline:{{payment_deadline}}

If you have any questions, please contact our office.

Why Accounting Offices Choose MailerBit

Unlimited Data Fields

PIT, VAT, ZUS, CIT, account numbers, deadlines — add as many custom fields per client as you need. No limits, no extra cost.

Recurring Monthly Sends

Schedule emails to go out on the 20th of every month (or any date). The system sends automatically — you only update amounts when they change.

Send from Your Domain

Emails arrive from your-office@yourdomain.com, not from a generic sender. Clients see your brand and trust the message.

CSV Import

Export from your accounting software, import into MailerBit. Update all your clients' data in one import — no manual entry required.

Built-in Calculations

Each merge tag can do one calculation, e.g. {{pit_amount + vat_amount}} or a gross amount with {{net_amount * 1.23 | round(2)}}, right in the email template. For a total of three or more amounts, keep it as its own column in your CSV.

Preview Before Sending

Preview every email with real client data before the monthly run goes out. Catch errors before your clients do.

Automate Your Monthly Client Emails

Set up your tax reminder workflow in minutes. The interactive demo lets you explore the full interface — no account or credit card required.

Further reading on our blog

Automated Payment Reminders That Actually Get Paid

Automated Payment Reminders That Actually Get Paid

Generic “please pay” emails get ignored. Here's what a payment reminder must contain, a sample with merge tags, a 5-step cadence, subject lines that work and the mistakes to avoid.

GDPR and DORA for Client Emails in 2026: A Practical Guide

GDPR and DORA for Client Emails in 2026: A Practical Guide

Payment reminders, statements and account notices carry personal and financial data. What GDPR requires for client emails, when consent is needed and whether DORA applies to you.

New in MailerBit: Clients and Payment Tracking

New in MailerBit: Clients and Payment Tracking

Sending the invoice is the easy part. Client cards with a full history, payments tied to the emails you send, a clear list of who owes what and optional automatic reminders that stop once a client pays.

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