Are there any open source tools or cheap plugins to test if my email newsletter templates are truly mobile friendly before sending them out
Download run
Fan-out diagram
The searches the AI actually ran for this prompt.
SEED QUERY
Are there any open source tools or cheap plugins to test if my email newsletter templates are truly mobile friendly before sending them out
2 real searches · 1 real-search pass
Badge and edge weight = share of passes that produced the query. Hover a query for its intent and routing format.
Query classes
Google's semantic query class for every sub-query: what kind of answer each search is after, simulated vs real.
ChatGPT real searches (2)
Classes come from the query-classifier (a local Laya model). 2 of 2 calls are low-confidence (under 50%) — hover a query in the table to see its confidence.
Searches and sources
ChatGPT2 real searches · gpt-6
open source email newsletter template responsive testing tools mobile preview Litmus alternatives 2026 Google ↗
email testing tools pricing free tier responsive email previews Mailtrap Email Preview Testi@ Email on Acid 2026 Google ↗
- Mailpit · mailpit.axllent.org
- GitHub · github.com
- Pricing and features · emailens.dev
- Postdrop website and pricing · postdrop.io
- Mailtrap device previews · mailtrap.io
- Mailpeek website · mailpeek.dev
- caniemail.com · caniemail.com
Queries
2 queries · click a column to sort
| Query / type | Search | Intent | Query class | Routing format | Cluster | Freq ↓ | Weight |
|---|---|---|---|---|---|---|---|
open source email newsletter template responsive testing tools mobile preview Litmus alternatives 2026 OBSERVED | Google ↗ AI Mode ↗ | — | Comparison | — | — | 1x of 1 | |
email testing tools pricing free tier responsive email previews Mailtrap Email Preview Testi@ Email on Acid 2026 OBSERVED | Google ↗ AI Mode ↗ | — | Other / navigational | — | — | 1x of 1 |