Tools for receiving written information

Language translation☁:
DeepL, Google Translate🧛, LibreTranslate GitHub, Lingva Translate (GitHub), PROMT.One Translator

Language translation - browser plugin🔌:
Firefox Translations, TWP

Researching Senders🕵️

Short link scan/unshortener☁:
CheckShortURL, GetLinkInfo, Unshorten.It, Unshorten.link⇉, unshorten.me🔌, URL Expander, URL X-ray, WhereGoes

Website verification☁🕵️:
Domain Dossier Norton Safe Web, Unmask Parasites, URLVoid, Web of Trust, Zscaler

Email

Email/calendar/contacts client:
Mozilla Thunderbird⊞🐧⌘■ (GitHub)

Email hosting☁🕵️:
Fastmail, mail.com, ProtonMail, Tuta🤖 (GitHub)

Temporary email🕵️:
Maildrop☁, 10 minute mail☁, Email On Deck☁, guerrillamail.com☁

Email summary:
Unroll.Me

Email - Privacy🕵️

Email privacy☁:
Email Privacy Tester

Email IP leak test☁:
Email Leak Tests

Email breach search☁:
have i been pwned?