Proton Fastmail
On what the policies say, there's nothing between them. Both are graded B.
Proton
Proton states that Proton Scribe does not use your data to train its models. The commitment is explicit and scoped to that one feature.
Verdict
B
- Does not train on you by default
- No opt-out in the policy
- Off by default. Training happens only if you opt in, or not at all.
- 5 Oct 2026
Fastmail
Fastmail's privacy policy now says it in one sentence: it does not and has never trained AI on customer data. It was added on 2 September 2026, a week after Fastmail told us so by email.
Verdict
B
- Does not train on you by default
- No opt-out in the policy
- Off by default. Training happens only if you opt in, or not at all.
- 5 Oct 2026
Proton: every plan
Proton · what each plan can refuse · checked 5 Oct 2026
All plans (Proton Scribe)
NO
Nothing to switch off
Not stated
Not stated
Unknown
14 / 50
Off by default
0 / 33
Nothing is on, so nothing needs refusing
0 / 4
No paywall on the control
1 / 4
2 kinds of data are in scope
2 / 4
The policy does not say whether people read it
2 / 2
Nothing is said about de-identification
All plans (Proton Scribe)TRAINS: NO
- Nothing to switch off
- Not stated
- 19 / 100
- Not stated
- Unknown
Fastmail: every plan
Fastmail · what each plan can refuse · checked 5 Oct 2026
All plans
NO
Nothing to switch off
Not stated
Not stated
Unknown
14 / 50
Off by default
0 / 33
Nothing is on, so nothing needs refusing
0 / 4
No paywall on the control
0 / 4
One kind of data is in scope
2 / 4
The policy does not say whether people read it
2 / 2
Nothing is said about de-identification
All plansTRAINS: NO
- Nothing to switch off
- Not stated
- 18 / 100
- Not stated
- Unknown