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What emails and IPs should I whitelist for Nectar?

Check out this list of emails and IPs to whitelist

Marissa Tingey avatar
Written by Marissa Tingey
Updated over 2 weeks ago

To ensure smooth and uninterrupted email delivery from Nectar, we recommend that your Network and Security teams whitelist the following IP addresses, email addresses, domains, and URLs.

Tip: Whitelisting these items helps prevent important messages—such as rewards, notifications, and support emails—from being blocked or filtered as spam.


Which IP addresses should I whitelist?

SMTP IP Addresses:

Amazon Web Services:

  • 34.192.253.140

Sendgrid (TangoCard)

  • 50.31.57.233

  • 50.31.57.231

  • 50.31.57.230

  • 50.31.57.23

  • 50.31.32.95

  • 198.37.150.177

  • 167.89.43.239

IP Ranges - Postmark:

  • 50.31.156.96/27 (50.31.156.96 – 50.31.156.127)

  • 104.245.209.192/26 (104.245.209.192 – 104.245.209.255)

Internal Comms IP:

  • 159.183.82.50


Which email addresses should I whitelist?


Which domains should I whitelist?

  • email.tangocard.com

  • rewardmail.tangocard.com


What URLs should be considered safe?

If your system parses URLs in email content, mark the following as safe:

  • tangocard.com

  • *.cloudinary.com

  • cloudinary.com

  • giphy.com

  • rewardlink.io

  • rewardlink.tangocard.com

  • rl.tangocard.com

  • click.rewardlink.com

  • nectarhr.com

Note: Including wildcard domains like *.cloudinary.com helps ensure full coverage for dynamic or subdomain-based content.

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