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WeZend
Migration

Switch providers without losing anything

No glossy brochures — these are the actual procedures: what to export where, in what order, and what honestly can't come along. Every guide ends in a checklist you can run point by point.

E-commerce ESP

How to switch from Klaviyo

The complete, honest procedure: suppressions first, profiles with consent intact, flows rebuilt as journeys, and a gradual cutover that protects your deliverability.

1–2 days hands-on, spread over 2–4 weeks of parallel running

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Email marketing

How to switch from Mailchimp

Audience export with subscribed/unsubscribed/cleaned intact, merge tags mapped to custom fields, and Customer Journeys rebuilt on a canvas that also speaks SMS and WhatsApp.

About a day hands-on, spread over 2–3 weeks of parallel running

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Marketing automation

How to switch from ActiveCampaign

Contacts, tags and custom fields via CSV, the exclusion list moved first, and automations translated to journeys — plus what to do about deals and site tracking.

1–2 days hands-on over 2–3 weeks — automations are the long pole

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CPaaS / SMS API

How to switch from Twilio

A code swap, not a data migration: the send-call diff, sender IDs re-registered, opt-outs carried over, and status callbacks remapped — with a phased rollout so nothing critical breaks.

Half a day of code changes; sender-ID registration sets the calendar (days to weeks per country)

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Transactional email

How to switch from SendGrid

Move transactional email without dropping a single receipt: suppression groups over first, parallel domain authentication, the v3 mail/send diff, and event-webhook remapping.

Half a day of code; DNS + a cautious cutover sets the pace (about a week)

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Enterprise engagement

How to switch from Braze

An engineering-led migration: user export via API, custom events remapped to the events endpoint, Canvases rebuilt as journeys, and Currents replaced by warehouse sync.

A sprint of engineering time over 4–6 weeks of parallel running

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CRM & Marketing Hub

How to switch from HubSpot Marketing Hub

Keep the CRM if you like it — move the messaging. Contacts and opt-outs over safely, workflows rebuilt as journeys, and a two-way integration so sales still sees everything.

1–2 days hands-on over 3–4 weeks; the CRM decision shapes the scope

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Email & SMS (EU)

How to switch from Brevo (Sendinblue)

The EU-to-EU move: contacts and blocklist over in an afternoon, transactional and marketing mail split cleanly, and SMS that finally shares a profile with email.

About a day hands-on over 2–3 weeks of parallel running

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Common to every migration

1. Suppressions first. Unsubscribes and bounces are imported before the first contact. From that moment, no mistake in the rest of the process can reach anyone who opted out.

2. Parallel running. The old platform isn't closed until the new one has delivered real traffic for weeks. Rollback must always be a config change — never a rescue project.

3. Honest warm-up. A new sending domain has to earn its reputation. We don't promise magic — we give you the ramp plan that does it right the first time.

One platform. Every customer interaction.

Replace your patchwork of messaging APIs, CDP and automation tools with a single engagement platform built for scale.

No credit card required · EU data residency · 99.99% uptime SLA