Duo vs Proton Mail: what each really costs

Team size

Billing

Duo

No plan for this billing option

No paid plan to compare for this billing option.

Proton Mail

No plan for this billing option

No paid plan to compare for this billing option.

10 peopleDuoProton Mail
Entry paid planNo plan for this billing optionNo plan for this billing option
Vendor price
Monthly cost
Annual cost
Per user / year
Billing commitmentNot recordedNot recorded
Minimum seatsNone statedNone stated
Free planYesYes
Free trialNot statedNot stated

Calculated by SpecEntry from official vendor prices. Taxes and optional add-ons are not included. Open each product page for every plan and the official source.

Duo vs Proton Mail pricing questions

How much do Duo and Proton Mail cost?
Duo paid plans start at $3/user/month (Essentials). Proton Mail paid plans start at $3.99 per month, billed annually (Mail Plus Annual).
Is Duo or Proton Mail cheaper for 5 users?
Proton Mail is cheaper for 5 users: $47.88 per year on Mail Plus Annual, against $180 per year for Duo on Essentials. That is $132.12 less per year, before tax.
Is Duo or Proton Mail cheaper for 10 users?
Proton Mail is cheaper for 10 users: $47.88 per year on Mail Plus Annual, against $360 per year for Duo on Essentials. That is $312.12 less per year, before tax.
Is Duo or Proton Mail cheaper for 25 users?
Proton Mail is cheaper for 25 users: $47.88 per year on Mail Plus Annual, against $900 per year for Duo on Essentials. That is $852.12 less per year, before tax.
Do Duo and Proton Mail have a free plan?
Yes, both list a free plan.