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Connect multiple email accounts via OAuth2 and send invoices, quotes and messages directly from the platform.
Trusted by leading companies
Connect your mailbox and emails land on the right record automatically.
Everything you need to work more efficiently.
Connect your Google account via OAuth2 — securely without storing passwords. Multiple accounts per user supported.
Connect Outlook and Microsoft 365 accounts via OAuth2. Emails are sent on behalf of your account.
Any IMAP/SMTP-capable provider can also be connected — for maximum flexibility.
Connect multiple email accounts simultaneously and choose the right sender when composing.
Create invoices and send them directly by email from cashwerk — using your own sender address.
Send quotes, order confirmations and other documents without going through an external inbox.
The email integration connects your existing email account to cashwerk — so you can send invoices, quotes and messages directly from the platform without opening an external inbox.
With OAuth2, you can connect Gmail, Google Workspace or Microsoft 365 in seconds — without storing passwords. Authorization is handled by your provider and can be revoked at any time. Multiple accounts per user are supported, so you can have a personal Gmail and a business Outlook account connected at the same time.
Once an account is connected, you can send emails directly from cashwerk. When creating an invoice, simply choose the desired sender account — the email goes out via your real sender address, not a generic cashwerk address. This builds customer trust and keeps communication professional.
In addition to invoices, quotes, order confirmations and any other messages can also be sent directly from cashwerk. The entire sending process runs through your connected provider — cashwerk acts only as a secure intermediary.
The integration is GDPR-compliant: all OAuth2 tokens are stored encrypted and are used exclusively for sending. There is no reading, storing or synchronizing of your email inbox.
Set it up once — send from cashwerk permanently.
Navigate in cashwerk to Settings → Email Integration.
Select Gmail, Microsoft 365 or another IMAP/SMTP provider.
Authorize cashwerk with one click through your provider — no password entry required.
Open an invoice or quote and send it directly by email through your connected account.
Repeat the process for additional accounts — and simply choose the right sender when composing.
Seamlessly integrated modules for your complete workflow.
cashwerk supports Gmail and Google Workspace via OAuth2, Microsoft 365 and Outlook via OAuth2, and all other providers with IMAP/SMTP access. Passwords are never stored.
Yes. You can connect multiple accounts (e.g. Gmail and Outlook at the same time) and choose the desired sender when sending invoices, quotes or emails.
cashwerk uses OAuth2 for Google and Microsoft — meaning you only grant temporary send permissions. Passwords are never stored. You can revoke the connection at any time in your Google or Microsoft account settings.
Yes, that is the core benefit of the integration. Create your invoice or quote in cashwerk and send it with one click via email — through your connected account, with your own sender address and domain.
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