Kerna vs WPS AI Email Writer
Kerna
kerna.ioWPS AI Email Writer
wps.comSide by side
| Figure | Kerna | WPS AI Email Writer |
|---|---|---|
| Price from | €12/mo | $5.83/mo |
| Free plan | Yes | Yes |
| Free trial | — | Yes |
| Open source | — | — |
| Web | Yes | Yes |
| Windows | Yes | Yes |
| macOS | Yes | Yes |
| Linux | — | Yes |
| iOS | — | Yes |
| Android | — | Yes |
| API | — | Yes |
| Plans published | 5 | 4 |
| Spec score · AI Email Writing Tools | 8.2 (#11) | 8.7 (#3) |
| Headquarters | Katowice, Poland | Singapore |
| Integrations | Kerna integrates with Gmail, Outlook, Calendar, Contacts and Sheets, and the pricing page lists shared mailboxes for Outlook. | The mobile WPS Office app lists support for Google Drive, Dropbox, OneDrive and other cloud services. |
| Intended users | Kerna describes itself as email automation for professionals and offers team plans for collaboration and larger organizations. | The page says it is useful for office workers, students, and general users. |
Plans
Kerna
- StarterFree
- Standard€12 a month
- Pro€22 a month
- Business€69 a month
- Enterprise€499 a month
WPS AI Email Writer
- AI Email WriterFree
- WPS StandardFree
- WPS Pro+$5.83 a month
- WPS Pro+ Sharing PlanPrice not published
In their own words
Kerna
Kerna is an AI email assistant for Gmail and Outlook on macOS, Windows, and the web. At a user’s request, it sorts open messages into categories such as Urgent, Respond, Invoice, Waiting, and Notification; users can also set custom categories and industry taxonomies. It drafts replies based on the full thread, with controls for intent and tone, and makes structured thread summaries for conversations of up to 50 messages. It can summarize attachments, extract selected fields into exportable tables, and translate inbound messages and outbound replies in 45 languages. Integrations include Calendar, Contacts, and Sheets as well as Gmail and Outlook. Kerna says it acts only when a user initiates a request, processes content in memory, discards it afterward, and redacts personal data before it reaches the inference provider. Its trust information reports TLS 1.2 or higher in transit and AES-256 encryption at rest. Kerna has a free plan; paid plans start at €12/mo. Outlook requires a Microsoft-hosted mailbox; POP or IMAP and on-premises Exchange are unsupported.
WPS AI Email Writer
WPS AI Email Writer turns a short idea into a draft for work, school, or everyday communication. It can help with requests, replies, apologies, follow-ups, thank-you notes, and business messages, including meeting requests, customer replies, teacher emails, and application messages. Users choose whether they want a short or more detailed result, then review and edit the draft before copying it into an email app or another platform. Gmail and Outlook are named as destinations for pasted drafts; the tool does not send messages. WPS lists the online tool as free to try, and its AI Email Writer plan is free, unlimited, with no signup required and no ads. The product is available on the web, Android, iOS, Linux, macOS, and Windows. WPS's AI terms advise against submitting personal data, business secrets, or other sensitive information, and state that user content is not used to train the models. The product page identifies WPS SOFTWARE PTE. LTD. and gives Singapore as its headquarters.