Growth · alternatives · 2026

24 alternatives to Custos

Personalized email drafts in seconds from your inbox

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes.

1. 1
   Right Inbox▲163

   Superpowers for Gmail

   2019 · rightinbox.com · its alternatives →

2. 2
   Nova Inbox▲182

   Personalize emails in seconds, right from your inbox

   2016 · its alternatives →

3. 3
   1-Click Personalization▲457

   Personalize any email in seconds

   2023 · humantic.ai · its alternatives →

4. 4
   Drip Scripts▲442

   Create automated email sequences in 60 seconds

   2017 · growthtools.com · its alternatives →

5. 5
   compose.ai▲326

   Write email at the speed of thought with AI.

   2020 · compose.ai · its alternatives →

6. 6
   Minute Mailer▲221

   Mailchimp + Buffer in one simple platform.

   2015 · minutemailer.com · its alternatives →

7. 7
   Postcards▲238

   Create 💌 emails in minutes with drag & drop simplicity

   2018 · designmodo.com · its alternatives →

8. 8
   ComposeMate: AI Email Writing Sidekick▲154

   Write emails like a pro in seconds from inbox directly

   2023 · anmolmishra.gumroad.com · its alternatives →

9. 9
   Brief▲254

   Stop yourself from sending wordy, rambling emails

   2017 · safia.rocks · its alternatives →

10. 10
    Sort Gmail Inbox by cloudHQ▲113

    Find an email in seconds with these free preset filters

    2020 · chromewebstore.google.com · its alternatives →

11. 11
    InboxThis▲167

    Send any webpage to your inbox in 5 seconds

    2022 · chromewebstore.google.com · its alternatives →

12. 12
    FastReply▲86

    Finally a lightweight template system for your emails!

    2020 · chromewebstore.google.com · its alternatives →

13. 13
    Concisely▲81

    Summarize any email in a single sentence with ChatGPT

    2023 · chromewebstore.google.com · its alternatives →

14. 14
    Minutemailer▲80

    Create and send beautiful newsletters in minutes

    2023 · minutemailer.com · its alternatives →

15. 15
    Craftmail AI▲79

    Create professional emails in seconds

    2023 · craftmailai.com · its alternatives →

16. 16
    Notion-like Mail Formatter▲106

    Pretty and formatted emails just one shortcut command away

    2021 · chromewebstore.google.com · its alternatives →

17. 17
    Superhuman for Windows▲153

    Fly through your inbox even faster than before

    2023 · new.superhuman.com · its alternatives →

18. 18
    Delos Mail▲79

    Delos AI drafts your replies and organizes your emails

    Jan 2026 · delos.so · its alternatives →

19. 19
    publishthis.email▲120

    Create a web page in seconds, by sending an email.

    2017 · publishthis.email · its alternatives →

20. 20
    Send.Design▲105

    Send visual email campaigns in seconds

    2016 · its alternatives →

21. 21
    EzMail.AI▲115

    Reply to emails 10X faster with pre-filled drafts by AI

    2023 · its alternatives →

22. 22
    Inbox When Ready▲116

    Protect your focus... hide your Gmail inbox by default

    2016 · chromewebstore.google.com · its alternatives →

23. 23
    Autobound Light▲76

    Intent-based insights turned into expert emails instantly

    2021 · its alternatives →

24. 24
    Reme.io▲77

    Create an e-mail reminder in seconds.

    2014 · reme.io · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →