Respond.io vs Arino One: Multi-Channel SaaS or a Dedicated Instance?

Respond.io does the hard part well: WhatsApp, Instagram, Messenger, web chat and more land in one inbox, with routing and automation on top, and a team can be productive the same week. The trade-off is structural rather than functional — you are renting a seat in a shared platform rather than operating one of your own, and that shows up in pricing shape, residency and what you can prove to an auditor.

TL;DR

• Respond.io: multi-tenant, multi-channel conversation SaaS. Priced around monthly active contacts and seats, vendor-hosted globally, fixed feature set. Fast to adopt and genuinely capable.
• Arino One: a single-tenant EU instance you own — 18+ channels, unlimited seats at a flat cost, wholesale conversation rates, an append-only consent ledger and hard-delete DSARs. More to stand up; you own the result.

Side-by-side comparison

Cost that tracks your audience

Contact-based pricing is comfortable while the list is small and uncomfortable exactly when marketing succeeds: a good quarter grows monthly active contacts, the tier steps up, and the platform bill rises independently of whether those conversations converted. Add seats for support, success and a night shift and the second axis moves too.

A flat instance decouples the two. Seats are unlimited, the platform cost does not move with the list, and Meta's conversation fee passes through at wholesale with no markup. Model both shapes against your real numbers with the WhatsApp Business API pricing guide.

Residency, consent and erasure

Under GDPR you are the controller in both cases. What differs is the evidence you can hand over. Shared SaaS gives you exports, deletion requests and a sub-processor list you do not control. A single-tenant EU instance gives you a named region, an append-only consent log recording source and timestamp for every opt-in, and hard deletion that removes the record across the instance and returns a receipt you can attach to a DSAR response. In a security review, that is the difference between describing a policy and demonstrating it.

Customisation and roadmap

On shared SaaS, anything the product does not do is a feature request competing with every other customer's. On your own instance, a routing rule, a custom field, an internal tool or a bespoke integration is a change you make when you need it — the platform bends to your process instead of the other way round.

When Respond.io is the right call

• You need several channels in one inbox quickly.
• Contact volumes are stable and the team is small.
• No regulator or buyer is asking where data is processed.
• You would rather never operate infrastructure.

When an owned instance wins

• Contact or seat tiers are shaping who gets access to customers.
• EU residency is a contractual requirement, not a preference.
• You need provable consent and erasure, not just a delete button.
• Volume is high enough that per-message economics matter.
• Your process needs the product to change, not the reverse.

Moving across

A migration is a number migration plus a template re-approval. Templates are re-submitted on the destination WhatsApp Business Account, contacts and opt-in state are imported into the CDP with their consent history preserved, other channels are reconnected, and the number moves in a short verification window scheduled outside peak hours. Automations are rebuilt once — then they are yours.