What rules should I add to our allow list to ensure Transistor's emails are delivered to my company?
If your company's email filters block Transistor's emails, have your IT team allow email from these addresses, IP address and domains:
- Sending email: support@transistor.fm and mail@transistor.fm
- IP address: 159.183.152.21
- Domains: em7173.transistor.fm and transistor.fm
Which emails does this cover?
- Private podcast emails, like invites and welcome emails to your subscribers. These come from mail@transistor.fm, with your podcast's author name as the sender.
- Account emails, like password resets. These come from support@transistor.fm.
To change what your private subscribers receive, see How do I customize the emails private subscribers receive?
If a password reset email doesn't arrive, see Why am I not getting the password reset email?
If you have additional questions please reach out to us:
- Email - support@transistor.fm
- Live Chat: https://transistor.fm/contact/
Updated on: 02/11/2026
Thank you!
