Gmail vs Outlook vs Proton: which to pick

The three biggest consumer-grade providers are Gmail, Outlook, and Proton. Pick the wrong one and you spend years working around it. Pick the right one and email becomes invisible — which is what email should be.

This isn't a feature checklist. It's a practical comparison based on the published plans, storage limits, and capabilities of each provider as of June 2026.

Gmail — the default for most people

Best for: personal use, freelance work, small business via Google Workspace.

Gmail's strengths are search speed, the spam filter, and the network effect of being the address everyone else assumes you have. Search is fast enough that most users stop using folders entirely — labels are a vestigial feature most accounts never touch.

The honest weaknesses:

• Filters are anemic. Power users hit ceilings fast (no AND/OR grouping, no nested conditions). Apple Mail and Outlook both do more here.
• The thread view is opinionated. If you don't like conversation grouping you can disable it, but the experience gets worse, not better.
• Free-tier storage is shared with Drive and Photos — 15 GB total, not 15 GB per service. Google has also been testing a 5 GB default for some new accounts that lift to 15 GB after phone verification.

Pricing (Google Workspace, as of June 2026)

Google Workspace plans, billed monthly per user, with a yearly commitment (source):

• Business Starter — $7/user/month — 30 GB pooled storage per user, custom email at your domain, video meetings.
• Business Standard — $14/user/month — 2 TB pooled storage per user.
• Business Plus — $22/user/month — 5 TB pooled, plus advanced security and retention.
• Enterprise — custom pricing.

Pick Gmail if

You want email to disappear into the background, you've been a Google user for years and don't want to retrain muscle memory, or you run a small business and need shared calendars, drives, and docs in the same ecosystem.

Outlook — the corporate default

Best for: anyone in a Microsoft 365 organization, anyone who lives in calendar invites, anyone who wants a real desktop client with deep features.

Outlook is built as a heavyweight desktop application that happens to also have a web version. The desktop client does rules, categorization, and offline composition more thoroughly than Gmail attempts. Calendar in Outlook is well-regarded for its scheduling assistant and conflict-resolution features.

The honest weaknesses:

• HTML email rendering in Outlook is its own genre of problem. See five Outlook quirks for the full picture.
• The mobile app is decent but not great. Apple Mail and Gmail mobile both feel snappier in day-to-day use.
• Pricing increases took effect July 2026. Some plans saw 10–17% bumps, so check current rates against any older comparisons you may have read.

Pricing (Microsoft 365 Business)

Microsoft announced changes that took effect on or around July 1, 2026, including mailbox storage moving from 50 GB to 100 GB per user on Business Basic, Standard, and Premium plans. Business Standard moved to $14/user/month; Business Premium remained at $22/user/month. For exact, up-to-date pricing in your region, check Microsoft's plans page.

Pick Outlook if

Your company runs Microsoft 365, you schedule heavy meeting volume and need real calendar features, or you actually use rules and categories to organize a high-volume inbox.

Proton — the privacy choice

Best for: people who treat privacy as a hard requirement — journalists, founders building privacy-aware products, anyone leaving the Google ecosystem on principle.

Proton encrypts your mailbox end-to-end. Proton itself cannot read your mail. The Swiss legal framework around their headquarters adds an additional jurisdictional layer — they cannot be compelled to hand over content they don't have keys for. The product has matured into a bundled suite: Mail, Calendar, Drive, Pass, and VPN under one subscription.

The honest weaknesses:

• Search is slower because of encryption — you notice this when an inbox is many tens of thousands of messages deep.
• Third-party app integration is limited. You need Proton Bridge to connect non-Proton mail clients to an encrypted mailbox.
• The free tier is tight — 1 GB storage, one address, no custom domain.
• Custom domains require a paid plan. Acceptable, but a friction point if you're comparison-shopping on price.

Pricing (Proton Mail, as of June 2026)

Yearly billing rates (source):

• Free — $0 — 1 GB storage, 1 address, 150 messages/day, no custom domain.
• Mail Plus — $3.99/month (yearly) — 15 GB storage, 10 aliases, 1 custom domain, Bridge for desktop clients.
• Unlimited — $9.99/month (yearly) — 500 GB storage, 15 addresses, 3 custom domains, plus VPN, Drive, Pass, Calendar.

Monthly billing on each tier is roughly 25% more than the yearly rate.

Pick Proton if

You want a provider that genuinely can't read your mail, you're building a personal brand around privacy, or you've decided to leave the Google ecosystem on principle.

Side-by-side: the parts that actually differ

Prices shown are US English rates on yearly billing as of June 2026 and exclude tax. Always check the providers' pricing pages for your region.

The honest recommendation

If you don't already have strong feelings about your email provider, use Gmail. The default is the default for a reason. If you're in a Microsoft shop, use Outlook — fighting your employer's ecosystem is exhausting. If privacy is a hard line for you, Proton is a finished, polished product and worth the small friction.

Whichever you pick, the format of the address inside it matters more than the brand on the domain. Read how to pick a professional email address for that side of the decision, or run any name through our email address generator to see twenty format candidates instantly.

Most people change providers once a decade. Pick the one whose weaknesses you can live with, and use the time you saved on the decision to actually answer your inbox.