Reach clients where they are.
Email for standard, SMS for urgent reminders, WhatsApp for frequent contact. Three channels, one flow.
Three channels, one central flow.
Custom domain email
Send from invoices@yourcompany.com instead of noreply@invoisio.com. SPF/DKIM guided by Invoisio (no IT skills needed).
SMS fallback
Client doesn't open email? Auto-SMS reminder after 14 days. 95% open rate within 3 minutes — €0.10 per SMS.
WhatsApp Business
Send invoices or reminders via WhatsApp Business API (Meta-approved). Especially useful for SMEs with retail clients.
Templates per language
Per-channel template in 4 languages. Variables ({invoice_no}, {amount}, {due_date}) auto-filled. WhatsApp templates pre-approved by Meta.
Effectiveness
Three channels increase open rate by 60%.
Email-only: 32% open. Email + SMS fallback: 78%. + WhatsApp: 91%. Measured at Invoisio clients 2025-2026.
Try for free
Frequently asked questions
What is custom domain email?
Instead of noreply@invoisio.com, Invoisio sends as invoices@yourcompany.com. Client sees your brand. Requires DNS (SPF/DKIM/DMARC).
What does SMS cost?
€0.10 per SMS to NL mobile, €0.12 BE/DE/ES, €0.20 elsewhere. Billed monthly. First 50/month free on Pro.
How does WhatsApp work?
Via WhatsApp Business API (Meta). Requires verified Business profile. Templates need approval — Invoisio has 6 ready.
Can I always send SMS/WhatsApp?
Business messages about open invoices: yes, legitimate interest (GDPR). Marketing requires opt-in.
Will my emails go to spam?
With Invoisio default: rarely. With custom domain: only if SPF/DKIM/DMARC correct — Invoisio guides you.
Ready to reach clients better?
Email default, SMS from Pro, WhatsApp from Business.