emersion/hydroxide
A third-party, open-source ProtonMail CardDAV, IMAP and SMTP bridge written in Go.
Go
Backend & APIs
API Frameworks
MIT
2.0K
Stars
147
Forks
Aug 21, 2017
Created
Jan 20, 2026
Last Updated
Project Analytics
Stars Growth (1 Month)
+30
+1.5% change
Avg Daily Growth (1 Month)
+1.1
stars per day
Fork/Star Ratio (All Time)
7.2%
Normal engagement
Lifetime Growth
0.7
stars/day over 3.1K days
Stars Over Time
Forks Over Time
Open Issues Over Time
Pull Requests Over Time
Commits Over Time
AI-Generated Tags
mail
protonmail
carddav
imap
smtp
open-source
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