Updated company email addresses and brand identity
Dear clients, partners, and stakeholders,
We are pleased to announce important updates reflecting DEISO’s recent global developments, mission expansion, and strengthened brand consistency.
Updated company email addresses
As part of our strategic global branding initiative — aligned with our domain (www.dei.so) — we have updated all DEISO email addresses.
Key points
- New standard: our official email domain has changed from @deiso.co.jp to @dei.so.
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Current status:
- Messages sent to @deiso.co.jp will still be received.
- All outgoing communication will now be sent from @dei.so addresses.
- New general contact address:
Why this change
- To unify and strengthen DEISO’s brand globally.
- To keep consistency across our corporate communications, digital platforms, and services.
- To reflect DEISO’s expanded global presence across 35+ countries and growing.
Action required
- Please update your records and address book to reflect our new email addresses for all future communications.
We appreciate your understanding and continuous support as DEISO grows to better serve you worldwide.
Updated DEISO logo and brand identity
As part of our growth and brand evolution, we are pleased to announce the updated DEISO logo and colour concept, reinforcing our commitment to sustainability, innovation, global impact, and human resource development.
Where to access the new logos
- Download all logos (single files or as a ZIP archive) via the official link: https://dei.so/brand-assets-and-pdfs/
New brand message
“Your partner in sustainability, innovation, and human resource development.”
About DEISO’s evolution
- Expanded global presence across 35+ countries.
- Introduction of new AI-supported sustainability solutions, strengthened LCA, PCF, GHG, and EPD services, and new training programs.
- Strengthened focus on actionable, measurable environmental impact and equipping organizations and individuals.
In closing
At DEISO, we are not just adapting to a changing world but actively shaping it.
These updates to our email communication and visual identity reaffirm our dedication to clarity, consistency, innovation, and global collaboration.
We thank you for your continued trust in DEISO. Together, we will continue to make an impact.
