What powers letterstream.com?
Last seen Jun 2026 · 49 technologies across 27 categories
Advertising
Microsoft Advertising
since Jul 2023
Analytics
Contentsquare
since Apr 2026
Google Analytics
since Aug 2018
HubSpot Analytics
since Dec 2025
Microsoft Clarity
since Jul 2023
CDN
cdnjs
since Dec 2025
Cloudflare
since Apr 2025
CMS
WordPress
since Feb 2019
Databases
MySQL
since Feb 2019
MailChimp
since Feb 2019
Font scripts
Google Font API
since Feb 2019
Twitter Emoji (Twemoji)
since Feb 2019
JavaScript frameworks
React
since Aug 2018
JavaScript libraries
Live chat
HubSpot Chat
since Jun 2025
Marketing automation
HubSpot
since May 2025
Miscellaneous
Operating systems
Ubuntu
since Feb 2019
PaaS
Amazon Web Services
since Sep 2021
Performance
Priority Hints
since Apr 2025
Programming languages
Reverse proxies
Envoy
since Mar 2025
Reviews
Trustindex
since Dec 2025
Security
Cloudflare Bot Management
since Apr 2025
HSTS
since Sep 2022
SEO
Tag managers
Google Tag Manager
since Aug 2018
Video players
YouTube
since May 2025
Web frameworks
Play
since Nov 2022
Web servers
Apache HTTP Server
since Aug 2018
Caddy
since Mar 2025
Webmail
Microsoft 365
since Aug 2022
WordPress plugins
Elementor Header & Footer Builder
since Dec 2025
WordPress Super Cache
since Dec 2025
WordPress themes
Twenty Fifteen
since Aug 2022
Audience
- 96% desktop
- 4% phone
Philippines
United States
Mexico
Bangladesh
Colombia
India
Countries where the site has Chrome traffic, strongest markets first.
Open Page Rank
2.75 / 10 · ranked #2,088,746 of all domains
43 referring domains · OpenPageRank
Core Web Vitals
| LCP | 1.4 s |
| INP | 25 ms |
| CLS | 0 |
| TTFB | 1200 ms |
Real user p75, Chrome UX Report, Jun 2026.
Page
- Language: English (United States)
- Weight: 1.4 MB · 87 requests
- WordPress theme: astra · all themes
- Structured data: JSON-LD, Microdata, OpenGraph, Twitter Cards
Homepage as crawled by the HTTP Archive, Jul 2026.
Subdomains
| Host | Techs |
|---|---|
| www.letterstream.com | 37 |
| blog.letterstream.com | 16 |
| help.letterstream.com | 11 |
| secure.letterstream.com | 5 |
Full technology history →
Report an incorrect detection
Recent changes
- detected Priority Hints Jun 2026
- dropped Priority Hints May 2026
- dropped Site Kit May 2026
- detected Yoast SEO Premium May 2026
- detected Contentsquare Apr 2026
- detected Facebook Pixel Apr 2026
- dropped Amazon ALB Jan 2026
- dropped Google Hosted Libraries Jan 2026
- detected Astra Dec 2025
- detected cdnjs Dec 2025
- detected core-js Dec 2025
- detected Elementor Header & Footer Builder Dec 2025
- detected Font Awesome Dec 2025
- detected Google Font API Dec 2025
- detected Google Tag Manager for WordPress Dec 2025
- detected HubSpot Analytics Dec 2025
- detected HubSpot WordPress plugin Dec 2025
- detected jQuery UI Dec 2025
- detected Open Graph Dec 2025
- detected Priority Hints Dec 2025
- detected Site Kit Dec 2025
- detected Trustindex Dec 2025
- detected WordPress Super Cache Dec 2025
- detected Yoast SEO Dec 2025
- detected YouTube Dec 2025
- dropped Help Scout Nov 2025
- dropped Preact Nov 2025
- dropped ActiveCampaign Sep 2025
- dropped Priority Hints Sep 2025
- dropped reCAPTCHA Sep 2025
- detected Elementor Aug 2025