Rank #6,303Updated November 10, 2026
groups.io
Groups.io | Email Discussion Groups & Listserv Alternative
The site runs on Font Awesome, htmx, Content Security Policy and 1 other technologies. Its email security grade is D. Its SSL certificate is issued by Let's Encrypt and is valid for 58 more days.
- Domain age
- —
- Technologies
- 4
- Email security
- D
- SSL days left
- 58
DNS records
| Type | Value | TTL |
|---|---|---|
| A | 45.79.81.153 | 600 |
| A | 173.255.221.194 | 600 |
| MX | lb01.groups.io 10 | 600 |
| MX | lb02.groups.io 10 | 600 |
| NS | dns1.groups.io | 60 |
| NS | dns2.groups.io | 60 |
| CAA | issue 128 letsencrypt.org | 600 |
| TXT | google-site-verification=cIdgZ-hBu3RiSGae0xG2qUDmQY5hS3dsg6qUGxAZjaE | 488 |
| TXT | v=spf1 include:_spf.groups.io -all | 188 |
Technology stack
SSL certificate
| Valid | Valid |
|---|---|
| Issuer | US, YR2, Let's Encrypt |
| Expires | January 7, 2027 |
| Days remaining | 58 |
| Protocol | TLSv1.3 |
| Names | groups.io |
Email security
DScore 64/100 across SPF, DMARC, DKIM, MTA-STS and BIMI.
- warnNo DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess.
- warnNo MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
- warnNo TLS-RPT record, so you won't hear about failed encrypted deliveries.
- warnNo BIMI record (optional: shows your logo next to your emails in supporting inboxes).
- goodSPF record found.
- goodSPF ends with -all: servers you have not listed are rejected (hard fail).
- goodDMARC policy is quarantine: failing mail goes to spam. Move to p=reject for full protection.
- goodDMARC aggregate reports are sent to mailto:[email protected].
- good2 MX record(s) found.
Homepage metadata
| Title | Groups.io | Email Discussion Groups & Listserv Alternative |
|---|---|
| Description | Groups.io is a modern email group service and listserv alternative with no ads. Create mailing lists with calendars, files, wikis, and more. Better than Google Groups or Yahoo Groups. |
| Language | en-US |
| Indexable | Yes |
| Word count | 1287 |
About groups.io
What technology does groups.io use?
We detected 4 technologies on groups.io, including Font Awesome, htmx, Content Security Policy, Nginx.
Does groups.io protect its email with SPF and DMARC?
groups.io scores 64/100 (grade D) for email security. No DKIM key found at common selectors (google, selector1, selector2, default, k1, k2, s1, s2, ...). DKIM may still use a custom selector we cannot guess. No MTA-STS: mail sent to you can be downgraded to an unencrypted connection.
What are the name servers of groups.io?
groups.io uses dns1.groups.io, dns2.groups.io.