Experiment to avoid Transactional Email delay

authgear / authgear-server

Open source alternative to Auth0 / Firebase Auth

https://www.authgear.com

Apache License 2.0

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Experiment to avoid Transactional Email delay #1390

Open fungc-io opened 3 years ago

fungc-io commented 3 years ago

Ref: https://github.com/authgear/authgear-server/issues/1314#issuecomment-885406811

Try to avoid hitting the spam filter on GSuite with different combinations

Remove images
change From address
Email Provider Postmark/Sendgrid

fungc-io commented 3 years ago

It will be hard for the end-users to identify which app the emails were coming from after removing the logo with the current template. Change the default email subject to the following too:

[{AppName}] Email Verification Instruction
[{AppName}] Reset Password Instruction
[{AppName}] 重設密碼指示
[{AppName}] 電郵地址驗證指示

louischan-oursky commented 3 years ago

I tried to send the emails to myself WITHOUT any modification with both SendGrid and Postmark. No emails were delayed.

Fung and I suspected that the via label in the sender address may be the cause of the delay. I created a new SendGrid account and uses my own domain to send the same email. There was no via label. I tried to redo the sender authentication setup but the via label still persisted. I googled but found no result sharing the same problem.