Desktop software (Outlook, ThunderBird, The Bat!... etc) use to have eMail client programs capable of adding a signature (final text, like "Best Wishes", "Phone number:..."... etc) to each new (and replied) composed email message.
That is not usual on Android apps, and you rather get something like:

Hello World.

Sent from K-9 eMail client for Android.

Could you please suggest me any eMail client app for Android that allows me to create/import minimally complex texts for signatures on my eMail messages?

Desired features:

  • Fonts management.
  • Graphics.
  • Links.

Open source solutions preferred. Payment options accepted.

  • 1
    certainly you can change the signature in K-9 Mail, create different ones for more identities and manage them easily! ...but no idea if other than plain text is possible (because i just use plain text to play it safe). Commented Nov 9, 2018 at 7:00

4 Answers 4


With MailDroid you can technically do it. Though they don't have everything supported in their own Signature editor, they allow you to add Raw HTML code as a signature! That virtually allows you to anything.

Even if you don't know how to write HTML, you can easily create something nice for free with services like www.mysignature.io, and then use the finished HTML code in MailDroid.

They have a free version, and a Pro version without ads and some additional features.

To add the HTML code you go into Settings>Compose>Signature. Choose the account you want to add it to and click the three dots on the upper-right side and select Add raw HTML signature. Then open the newly added empty signature and paste in the HTML code you have.

  • Is it supposed to allow graphics embedding on that HTML code? Commented Jan 1, 2018 at 3:07
  • If it has the proper image URL in the HTML code then yes. Commented Jan 1, 2018 at 3:20
  • Linking a external image via URL is not embedding it inside the email message. Commented Jan 1, 2018 at 12:24
  • Are you talking about embedded whole image data? I assume it does but I haven't tried. Commented Jan 1, 2018 at 18:37
  • I have installed MailDroid, and it allows adding images on signatures. A flaw: as for today (v4.81), these images fail when trying to include URL links (I have notified the author). I have tested the RAW HTML method too, and it works, but if you want to embed images, you should use the base64 equivalent, as explained here: stackoverflow.com/a/2329400/1461017 . Help with conversion to base 64 here: stackoverflow.com/a/16918665/1461017 . Thanks you, Yisroel Tech. Commented Jan 2, 2018 at 0:56

As mentioned by @Crivens, Samsung EMAIL is a very decent mail client on the Play Store. It has all options of a good client except the Archive gesture (achieved with swipe & move). It has a very sofisticated rich text editor for that, but don't let you write down HTML directly over it. Insted, you have to open your HTML signature on Chrome and copy/paste the rendered page over the editor. All data is retained: general structure, links, styles... No memory hogs and no excesive data leaks by the time I'm writing this, mostly because I use push on all my accounts.

As for now, I'm looking for an email client with HTML signature (check) AND the Archive gesture (still looking for). I'll use it until I find what I really looking for.


I use Nine Folders and find it is very feature rich.



I use the Samsung Email app. Not sure if available for other devices, but mine came installed on my S8+. I tried loads of other apps, inc Outlook and Gmail, but couldn't get the HTML signature. Pasted into Samsung Email app perfectly fine. Only downside is it seemed to use up a lot of battery, but with some time management in the settings (work Emails only in the day and less regularly in the night , private Emails less regularly full stop) it's a lot better.


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