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Outlook.com (free) — 15 GB mail quota, 150 MiB SMTP SIZE

outlook.comCloud drivestorage/outlook-com-15-gb-mail-quota-150-mib-smtp-sizeJSON compare report an error provider JSON

Free allowance: 15 GB mail storage, explicitly separate from the 5 GB OneDrive allowance: "You get 15 GB of free Outlook.com email storage which is separate from your Microsoft cloud storage.
Verdict: fails: quotathe free allowance is too small to matter
Cost: free tier
Identity: email?placeholder, not evidence; card unknown, phone unknown
Binding limit: per-object-capper-object-cap governed by 250-SIZE 157286400 = 150 MiB
Evidence: reported3 sources; a third party said so
Freshness: stale on 2026-11-05checked 2026-10-21 (inherited); stale on 2026-11-05

Free tier	15 GB mail storage, explicitly separate from the 5 GB OneDrive allowance: "You get 15 GB of free Outlook.com email storage which is separate from your Microsoft cloud storage. You have 5 GB of free cloud storage with your Microsoft account shared across your files and photos, attachments in Outlook.com and your Microsoft 365 apps." unit GB; metered on stored-bytes
Price	none stated
Limits	per-object-cap (binding) per-object-cap governed by `250-SIZE 157286400` = 150 MiB source per-object-cap governed by `250-SIZE 157286400` = 150 MiB per SMTP message, the largest SMTP SIZE probed in this area. Deleted Items counts against quota until emptied or auto-purged at 30 days. No published IMAP/day byte meter equivalent to Gmail's.
Identity	email (inferred, not read) not published
Egress	Unmetered; no transfer billing on a mailbox.
Per-object cap	per-object-cap governed by `250-SIZE 157286400` = 150 MiB (157286400 bytes)
Retention	Deleted Items counts against quota until emptied or auto-purged at 30 days (30 days)
Interface	rest rest
Tooling	IMAP probe-verified: `imap-mail.outlook.com:993` -> `* OK Microsoft Exchange IMAP4 service ready` / `* CAPABILITY IMAP4 IMAP4rev1 AUTH=XOAUTH2 LOGINDISABLED SASL-IR UIDPLUS MOVE ID UNSELECT CHILDREN IDLE NAMESPACE LITERAL+`. Note LOGINDISABLED — OAuth2 only. SMTP probe: `smtp-mail.outlook.com:587` -> `250-SIZE 157286400` (150 MiB) and `250-BINARYMIME`.
Composes with	15 GB × N free Microsoft accounts. Distinct from the A1-education 100 TB tenant offer — this is the consumer path, no tenant needed.
Reliability	LOGINDISABLED means app-password/basic auth is off — an OAuth2 client registration is mandatory, which is the real entry cost.
Parsed numbers	has-free-tier 1 per-object-cap 150 MiB

Evidence 3

date	source	what it proved
2026-10-21	support.microsoft.com/en-us/outlook/storage-limits-in-outloo	"15 GB of free Outlook.com email storage which is separate from your Microsoft cloud storage"
2026-10-21	source not published	probe: smtp-mail.outlook.com:587 STARTTLS EHLO -> 250-SIZE 157286400, 250-BINARYMIME
2026-10-21	source not published	probe: imap-mail.outlook.com:993 -> * OK Microsoft Exchange IMAP4 service ready + CAPABILITY with LOGINDISABLED, LITERAL+

More fields 1

dead end {"failure_class": "quota","why": "15 GB mail storage, explicitly separate from the 5 GB OneDrive allowance: \"You get 15 GB of free Outlook.com email storage which is separate from your Microsoft cloud storage. You have 5 GB of free cloud storage with your Microsoft account shared across your files and photos, attachments in Outlook.com and your Microsoft 365 apps.\"","retry_when": null,"first_recorded": "2026-10-21"}

dead end	`{"failure_class": "quota","why": "15 GB mail storage, explicitly separate from the 5 GB OneDrive allowance: \"You get 15 GB of free Outlook.com email storage which is separate from your Microsoft cloud storage. You have 5 GB of free cloud storage with your Microsoft account shared across your files and photos, attachments in Outlook.com and your Microsoft 365 apps.\"","retry_when": null,"first_recorded": "2026-10-21"}`

Unknown values 2

per object cap notes: the field may be stated in a source that was not read
retention notes: the field may be stated in a source that was not read