10 buyer questions asked on ChatGPT, Gemini, Perplexity — 30 answers analysed, 2026-09-20. Ranked by how many answers named each product. Proton Mail was named most often (26 of 30).
| # | Product | Answers naming it | Share of voice | % |
|---|---|---|---|---|
| 1 | Proton Mail scored 87/100 | 26 |
|
87% |
| 2 | Tuta Mail | 22 |
|
73% |
| 3 | Mailbox.org | 13 |
|
43% |
| 4 | Mailfence | 8 |
|
27% |
| 5 | Fastmail | 7 |
|
23% |
| 6 | Gmail | 7 |
|
23% |
| 7 | Posteo | 7 |
|
23% |
| 8 | Outlook | 6 |
|
20% |
| 9 | StartMail | 6 |
|
20% |
| 10 | Virtru | 4 |
|
13% |
| 11 | Microsoft 365 | 3 |
|
10% |
| 12 | PreVeil | 3 |
|
10% |
Which one do the AI assistants actually name more often?
Proton Mail vs Tuta MailProton Mail vs Mailbox.orgTuta Mail vs Mailbox.orgWe'll ask the same 10 questions about your product and show you which ones you're missing from. Takes about a minute — no account, no card.
Scanning in private and encrypted email — the same category as this table.
Method: each surface was asked the same 10 buyer questions; every answer was analysed for which products it named. Counts are mentions in answers, not endorsements. Nobody pays to be listed.