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Best AI Email Writer - Boss Alternatives for iPhone (2026)

AI Email Writer - Boss is B tier, #8 of the 9 tiered apps in email writing. Here is everything that competes with it on iPhone, in tier order.

All 8 alternatives, in tier order

1. 1
   Spark Mail: AI Email AssistantShigher tier

   Free + IAP · ★ 4.6 · 351,091 ratings · score 98

   Email app that combines multiple accounts into one inbox and surfaces priority messages first.
2. 2
   Superhuman MailShigher tier

   Free download · ★ 4.5 · 5,704 ratings · score 92

   AI-native email client for Gmail and Outlook with draft replies, inbox splits, follow-up reminders, and CRM.
3. 3
   Canary Mail - AI EmailAhigher tier

   Free + IAP · ★ 4.5 · 21,762 ratings · score 90

   Email app that puts Gmail, Outlook, iCloud and other accounts into one inbox, with AI writing help, sorting, scheduling.
4. 4
   AI Email Generator: XemailAhigher tier

   Free + IAP · ★ 4.8 · 6,767 ratings · score 89

   Drafts emails, letters and replies from brief ideas, with templates for business, job and personal messages.
5. 5
   Friday AI Email WriterAhigher tier

   Free + IAP · ★ 4.7 · 30,068 ratings · score 89

   AI assistant that drafts emails and letters, proofreads text, and suggests writing edits from typed or voice input.
6. 6
   AI Writer: Email Letter EssayAhigher tier

   Free + IAP · ★ 4.7 · 10,029 ratings · score 87

   Free iOS app listed as Reference that generates writing for emails, letters and essays using AI, with voice dictation.
7. 7
   ParagraphAI: Writer & KeyboardAhigher tier

   Free + IAP · ★ 4.7 · 3,950 ratings · score 81

   Free AI writing assistant and AI keyboard for drafting, editing, summarizing and translating text in 40+ languages.
8. 9
   AI Email GeneratorD

   Free download · ★ 4.4 · 5 ratings · score 56

   Drafts, replies to, and summarizes emails with AI, offering templates, tone adjustment, subject lines, and grammar.

Questions people ask

What is the best alternative to AI Email Writer - Boss on iPhone?

Spark Mail: AI Email Assistant, S tier, #1 in email writing.

Is there a free alternative to AI Email Writer - Boss?

Yes: Spark Mail: AI Email Assistant (S tier, #1) is free to download, with in-app purchases.

Does anything rank above AI Email Writer - Boss?

Yes. 7 apps rank above it in email writing: Spark Mail: AI Email Assistant (#1), Superhuman Mail (#2), Canary Mail - AI Email (#3) and more.

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