Connect Authgear with

# Postmark

Communication

Use Postmark as your email service provider

[Visit Postmark](https://postmarkapp.com/)

## More available integrations

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**WhatsApp** \
Use WhatsApp-based OTP to verify logins](/content/integrations/whatsapp/index.html)
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**Telegram** \
Use Telegram-based OTP to verify logins](/content/integrations/telegram/index.html)
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**Google Workspace** \
Let Users Access Google Workspace via Authgear](/content/integrations/google/index.html)
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**Google Tag Manager** \
Measure Signup Conversion and Marketing ROI on Authgear](/content/integrations/google-tag-manager/index.html)
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**Plausible** \
Analyze Campaign ROI and Signup Conversion with Plausible](/content/integrations/plausible/index.html)
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**Mailgun** \
Use Mailgun as your email service provider](/content/integrations/mailgun/index.html)