Pricing
KaiMail pricing
As kaimail.net lists them, read 8 Oct 2026. The maker's own page has the final word.
| Plan | Billed and limits | Price |
|---|---|---|
| KaiMail Basic | Free · 1 custom domain · 1 mailbox · 300 emails/month max · 1MB max email size · 1 day logs retention | Free |
| KaiMail Pro | ¥1650 /month (inc. tax) · 10 custom domains · 20 mailboxes · 10k emails/month max · 25MB max email size · 30 days logs retention · SMTP sending (1,000/month) | ¥1,650 a month |
| KaiMail Plus | ¥550 /month (inc. tax) · 2 custom domains · 5 mailboxes · 5k emails/month max · 10MB max email size · 7 days logs retention · SMTP sending (500/month) | ¥550 a month |
| KaiMail Business | ¥5500 /month (inc. tax) · 50 custom domains · Unlimited mailboxes · 50k emails/month max · 35MB max email size · 30 days logs retention · SMTP sending (2,000/month) · Priority support | ¥5,500 a month |
From kaimail.net.