Inboxwire by BufferSol vs Nylas
Nylas is the broadest hosted API. We cover Gmail, Microsoft 365 and IMAP only, priced per plan rather than climbing with every account. Prices read 3 Nov 2026.
Start free| Feature | Nylas | Inboxwire |
|---|---|---|
| Pro plan | $49 a month for 25 accounts ($43 billed annually) | Cloud Growth $99.99 a month for 100 mailboxes |
| Extra account | $2.00 a month ($1.75 annual) | $0.99 a month |
| Free tier | 5 accounts | 3 mailboxes |
| Self-hosted | Partial | Yes |
| Calendar and contacts | Yes | No |
| EWS, iCloud, Yahoo | Yes | No |
| Mail copies stored in vendor cloud | Yes | Metadata only by default |
| CASA Readiness Kit | No | Free on every plan |
Where Nylas is the better choice: you need calendar or contacts, EWS, iCloud or Yahoo, SOC 2 or ISO attestations today, or a shared CASA-verified Google app so you never run your own assessment. Choose Nylas if you need calendar or EWS.
Common questions
Do I still need CASA with Inboxwire by BufferSol?
If your Gmail app uses restricted scopes for external users, yes. We provide a free readiness kit for our part and never resell an assessment. Nylas sells a shared verified app as an add-on.
Where is mail stored?
Inboxwire by BufferSol stores metadata only by default and never logs message bodies.
Try Inboxwire on three mailboxes
Connect a mailbox and watch the first signed webhook arrive.
No credit card needed.