Create and send invoices your customers can pay fast
Singularix Streamliner registers your business, keeps your invoice numbering in order, and emails every invoice out as a professional PDF with a secure hosted link — no manual exports, no attachments to chase down.
- PDF invoices, emailed automatically
- Secure hosted invoice links
- REST API & webhooks included
Everything you need to invoice and get paid
One account covers registration, invoicing, integrations, and billing.
PDF invoices, emailed automatically
Every invoice you send goes out by email as a PDF with a secure hosted link your recipient can view or download — no exports, no attachments to manage.
Line items & sequential numbering
Enter line items once — invoice numbers, totals, and VAT are calculated for you, with payment status tracked on every invoice, sent or received.
Integrations that fit your stack
Outbound webhooks for Zapier, Make, and n8n, plus a token-authenticated REST API for invoices and payment status.
Team access with clear roles
Invite viewers and creators alongside the account owner, so the right people can see or send invoices — without full account access.
Self-service billing
Pick a plan, manage payment details, and track usage against your monthly sent-invoice limit — no sales calls required.
Your data, exportable anytime
Download a full take-out of your account, recipients, and invoices as JSON and UBL XML whenever you need it.
How it works
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1
Register your business
Business name, VAT/registration number, and an email and password to sign in with.
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2
Create your first invoice
Add line items once — numbering, totals, and VAT are handled for you automatically.
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3
It's emailed for you
Your recipient gets a PDF invoice and a secure hosted link by email — you can track its payment status from your dashboard.
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4
Connect the rest of your stack
Wire up webhooks or the REST API to keep your accounting and CRM tools in sync automatically.
Simple, usage-based pricing
Every plan includes the full product. Pricing scales with how many invoices you send each month.
Free
Free
10 sent invoices / month
- All core invoicing features
- 1 user (account owner)
- Community support
Mid
€29.00/month
100 sent invoices / month
- Everything in Free
- Webhooks & REST API integrations
- Invite viewers & creators
- Email support
Enterprise
€149.00/month
1000 sent invoices / month
- Everything in Mid
- Higher monthly invoice volume
- Priority support
Ready to send your first invoice?
Register your business and start emailing professional invoices in minutes.
Register your business