Email provider deliverability scorecard
Compare how consumer, business, privacy, and regional email providers respond to verification. Use public signal data to segment your list and improve deliverability.
This scorecard is built from public provider behaviour and aggregate anonymized verification signals. It is a guide for segmentation, not a guarantee of inbox placement.
| Provider | Category | Catch-all | SMTP response | Disposable rate | Role rate |
|---|---|---|---|---|---|
| Gmail / Google Workspace | Consumer | Low | Reliable | Low | Medium |
| Microsoft Outlook / Microsoft 365 | Consumer | Low | Reliable | Low | Medium |
| Yahoo / AOL | Consumer | Low | Reliable | Low | Medium |
| Apple iCloud | Consumer | Low | Conservative | Low | Low |
| Proton Mail | Privacy | Low | Conservative | Low | Low |
| Zoho Mail | Business | Low | Reliable | Low | Medium |
| Fastmail | Business | Low | Reliable | Low | Low |
| Yandex | Regional | Low | Variable | Low | Medium |
| Mail.ru / VK | Regional | Low | Variable | Low | Medium |
| Tencent QQ / NetEase | Regional | Low | Strict | Low | Low |
| Japanese carrier mail (docomo, au, SoftBank) | ISP | Low | Strict | Low | Low |
| Generic business / custom domain | Business | High | Variable | Low | High |
| Temporary / disposable providers | Privacy | Low | Reliable | High | Low |
Gmail / Google Workspace
Strong SMTP response and strict anti-spam filtering. Personal Gmail has low invalid rates; Workspace is business-grade.
Microsoft Outlook / Microsoft 365
Similar to Gmail in volume and reliability. Sender reputation matters heavily for inbox placement.
Yahoo / AOL
Large, older user base with a higher share of dormant mailboxes. Verification is essential before re-engagement.
Apple iCloud
Hide My Email relay addresses behave like real mailboxes but may show lower engagement for marketing.
Proton Mail
Privacy-first provider with deliberately limited SMTP information. Treat unknown results carefully.
Zoho Mail
Popular with small businesses and freelancers. Generally reliable if the domain is properly configured.
Fastmail
Paid provider with technically literate users and very low invalid rates.
Yandex
Major Russian provider. International senders may see greylisting or temporary rejection.
Mail.ru / VK
Large Russian-language base. Similar to Yandex, international sends may face filtering.
Tencent QQ / NetEase
Chinese providers with strict inbound filtering. IP and domain reputation are critical.
Japanese carrier mail (docomo, au, SoftBank)
Mobile carrier mailboxes often reject unknown international senders by default.
Generic business / custom domain
Small business domains are often catch-all and use role-based addresses. Segment these carefully.
Temporary / disposable providers
High bounce and zero-engagement risk. Best blocked at the point of capture.
Verify your list against these signals
Upload a CSV or connect the API to segment your list by provider, catch-all, disposable, and role-based risk.
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